DECISION AND ORDER
VICTOR MARRERO, District Judge.I. BACKGROUND
Plaintiffs Bridgeport Music Inc. and Southfield Music Inc., (collectively “Bridgeport”) brought this action alleging that defendants UMG Recording Inc., Napster, LLC, Apple Computer, Inc., and Yahoo!, Inc. (collectively “UMG”) infringed Bridgeport’s copyrights to certain musical compositions by, among other means, permitting electronic copying of the works at issue. Following a ruling by the Court resolving a dispute concerning UMG’s alleged unauthorized streamlining of the compositions, Bridgeport moved to file a second amended complaint. In its proposed submission, Bridgeport seeks to assert other claims, including naming Music-Net, Inc. (“MusicNet”) as a defendant; to add allegations pertaining to the licensing of *410the disputed compositions for use as cellphone ringtones; and to include other factual matters modifying or expanding upon allegations and claims contained in the existing pleadings.
By Memorandum and Order dated January 10, 2008 (the “Order”), a copy of which is attached and incorporated herein, Magistrate Judge James C. Francis, IV, to whom this action has been referred for supervision of pretrial proceedings, granted Bridgeport’s motion in its entirety. UMG filed objections challenging the Order’s findings and conclusions. For the reasons stated below, the Court adopts the Order in its entirety.
II. STANDARD OF REVIEW
A district court evaluating a Magistrate Judge’s order with respect to a matter not dispositive of a claim or defense may adopt the Magistrate Judge’s findings and conclusions as long as the factual and legal bases supporting the ruling are not clearly erroneous or contrary to law. See 28 U.S.C. § 636(b)(1)(A); Fed.R.Civ.P. 72(b); Thomas v. Arn, 474 U.S. 140, 149, 106 S.Ct. 466, 88 L.Ed.2d 435 (1985). A district judge, after considering any objections by the parties, may accept, set aside, or modify, in whole or in part, the findings and recommendations of the Magistrate Judge with regard to such matters. See Fed.R.Civ.P. 72(a); see also DeLuca v. Lord, 858 F.Supp. 1330, 1345 (S.D.N.Y.1994).
UMG contends that in this Circuit the law is unsettled with regards to the issue of whether a Magistrate Judge’s order granting leave to amend a complaint is classified as dispositive. See Children First Found., Inc. v. Martinez, No. 04 Civ. 0927, 2007 WL 4618524, at *4 (N.D.N.Y. Dec. 27, 2007); Calabro v. Stone, No. CV 2003-4522, 2005 WL 327547, at *1 (E.D.N.Y. Jan. 27, 2005). Some uncertainty and arguable differences of opinion do exist among district courts in this Circuit as to the proper classification of a Magistrate Judge’s ruling denying a motion to amend a pleading. See Lyondell-Citgo Refining, L.P. v. Petroleos de Venezuela, No. 02 Civ. 0795, 2005 WL 883485, at *2-3 (S.D.N.Y. Apr.14, 2005) (citing cases). Nonetheless, the weight of opinion appears to favor treating such rulings as nondispositive. See id. Nonetheless, however the case law may lean on the question as to a denial of leave to amend the pleadings, the prevailing view should apply with greater force to a Magistrate Judge’s granting a motion to amend a complaint. Such orders do not remove a party’s claims or defenses. Moreover, the underlying motions are reviewed under the liberal standard applicable under Federal Rule of Procedure 15(a), which encourages permitting amendments of pleadings, as opposed to the more consequential standard of futility applied under Rule 12(b) by some courts in denying leave to amend. See id. Absent clear, controlling authority, the Court is not persuaded that a Magistrate Judge’s ruling granting a motion to amend a complaint is dispositive under the generally accepted criteria defining the term. See Children First, 2007 WL 4618524, at *4 (noting an unpublished Second Circuit summary order in which the Circuit Court noted that a motion to amend a complaint to add a claim is nondispositive). Accordingly, in reviewing the Order and UMG’s objections, the standard the Court has applied is whether the ruling was clearly erroneous or contrary to law.
III. DISCUSSION
UMG argues that adding MusicNet as defendant at this stage of the litigation would be prejudicial, especially in light of the following contentions: (1) Bridgeport’s alleged longstanding awareness of MusicNet’s role in the underlying events; (2) that Bridgeport seeks to add a new theory of infringement and liability; (3) that Bridgeport’s claims concerning use of the disputed compositions in ringtones are speculative and would be futile to assert at this point; and (4) that the other factual allegations entail matters of which Bridgeport had been aware even prior to filing its original complaint.
Having conducted a review of the full factual record in this litigation, including the pleadings, and the parties’ respective papers submitted in connection with Bridgeport’s motion and in this proceeding, including the Order and applicable legal authorities, as well as UMG’s objections, the Court con-*411eludes that the findings, reasoning, and legal support embodied in the Order are not clearly erroneous or contrary to law and are thus warranted. Accordingly, for substantially the reasons set forth in the Order the Court adopts the Order in its entirety.
IV. ORDER
For the reasons discussed above, it is hereby
ORDERED that the Memorandum and Order of Magistrate Judge James C. Francis, IV dated January 10, 2008 (Docket No. 94) is adopted in its entirety, and the objections of defendants herein (Docket No. 102) are DENIED.
SO ORDERED.
MEMORANDUM AND ORDER
JAMES C. FRANCIS IV, United States Magistrate Judge.The plaintiffs in this action allege that the defendants infringed their copyrights in certain musical compositions by offering them for digital download. They now move pursuant to Rule 15(a) of the Federal Rules of Civil Procedure for leave to amend the complaint. The defendants oppose most of the proposed amendments on grounds of delay, prejudice, and futility. For the reasons that follow, the plaintiffs’ motion is granted.
Background
Plaintiffs Bridgeport Music Inc. and Southfield Music, Inc. (collectively, “Bridgeport”) are copyright holders of various musical compositions that are the subject of a 1991 settlement agreement with Polygram Records International (“PRI”), the predecessor of defendant UMG Recordings, Inc. (“UMG”). (First Amended Complaint (“Am. Compl.”), ¶¶ 14, 18). The 1991 agreement granted PRI a license to release the musical compositions on “records” (Am.Compl., ¶ 16), a term not expressly defined. Bridgeport asserts that the licensing agreement did not cover digital distribution of the compositions. (Am.Compl., ¶ 24). It alleges that UMG infringed its copyright in the musical compositions by licensing the compositions for download to various parties, including defendants Apple Computer, Inc. (“Apple”), Napster, LLC (“Napster”), and Yahoo!, Inc. (“Yahoo”). (Am.Compl., ¶¶ 25-27).
Bridgeport filed the initial complaint on July 15, 2005, and amended it in December 2006, substituting UMG for Universal Music Group, Inc. and adding allegations regarding the infringement of rights of public display. (Am.Compl., ¶¶ 28, 36-37, 41, 49).
On June 4, 2007, Magistrate Judge Kevin N. Fox issued an order finding that “ ‘streaming’ ... is within the ambit of the plaintiffs’ amended complaint.” (Order dated June 4, 2007 (the “6/4/07 Order”) at 2). That order was affirmed by the Honorable Victor Marrero, U.S.D.J. on August 1, 2007. (Order dated Aug. 1, 2007, (the “8/1/07 Order”)). Following a conference on July 26, 2007, I issued an order providing, among other things, that “[cjounsel shall stipulate to amendment of the complaint to encompass all compositions governed by the 1991 PRI agreement and in which plaintiffs retain rights.” (Order dated July 26, 2007, ¶ 8).
Bridgeport now seeks to amend its complaint a second time to (1) add a number of musical compositions to those already at issue, (2) assert allegations regarding the streaming of the compositions, (3) include MusicNet, Inc. (“MusicNet”) as a defendant, (4) incorporate allegations regarding rights of performance in the compositions at issue, (5) assert allegations regarding the licensing of the compositions for use as cellphone “ringtones,” and (6) incorporate factual information that does not affect the substantive claims at issue in the suit. The defendants consent to the first two changes but oppose the remainder.
Discussion
A. Standard for Amendment
A motion to amend is generally governed by Rule 15(a) of the Federal Rules of Civil Procedure, which states that “[tjhe court should freely give leave when justice so requires.” Fed.R.Civ.P. 15(a); see also Oneida Indian Nation of New York v. City of Sherrill, 337 F.3d 139, 168 (2d Cir.2003), rev’d on other grounds, 544 U.S. 197, 125 S.Ct. 1478, 161 L.Ed.2d 386 (2005). Notwithstanding the liberality of the general rule, “it *412is within the sound discretion of the court whether to grant leave to amend.” John Hancock Mutual Life Insurance Co. v. Amerford International Corp., 22 F.3d 458, 462 (2d Cir.1994); accord Krumme v. WestPoint Stevens Inc., 143 F.3d 71, 88 (2d Cir.1998). Regarding the use of this discretion, the Supreme Court has stated:
In the absence of any apparent or declared reason — such as undue delay, bad faith or dilatory motive on the part of the movant, repeated failure to cure deficiencies by amendments previously allowed, undue prejudice to the opposing party by virtue of allowance of the amendment, futility of amendment, etc. — the leave should ... be freely given.
Foman v. Davis, 371 U.S. 178, 182, 83 S.Ct. 227, 9 L.Ed.2d 222 (1962) (internal quotation marks omitted).
B. Uncontested Changes
As noted above, the defendants do not oppose the addition of musical compositions to the complaint as permitted by my July 26, 2007 Order. (Defendants’ Memorandum of Law in Opposition to Plaintiffs’ Motion to Amend the Complaint (“Def.Memo.”) at 1); Exh. A to Proposed Second Amended Complaint (“PSAC”), attached as Exh. B to Declaration of Richard Busch dated Oct. 19, 2007 (“Busch 10/19/07 Deck”), at 24-27. Nor, in light of the rulings of Judges Fox and Marre-ro, do the defendants oppose the inclusion of references to streaming content. (Def. Memo, at 1; PSAC, ¶¶23, 27, 31, 37, 45, 49, 56).
C. Adding MusicNet as a Defendant
The defendants oppose the addition of MusicNet as a defendant because the plaintiffs have purportedly delayed joinder, and this delay will cause substantial prejudice both to the defendants and to MusicNet. (Def. Memo, at 11-17). While motions to amend are generally governed by Rule 15(a), Rule 21 controls if the proposed amendment adds new parties. Momentum Luggage & Leisure Bags v. Jansport, Inc., No. 00 Civ. 7909, 2001 WL 58000, at *1 (S.D.N.Y. Jan. 23, 2001) (citing Kaminsky v. Abrams, 41 F.R.D. 168, 170 (S.D.N.Y.1966)). Rule 21 states that a party may be added to an action “at any time, on just terms.” In deciding whether to permit joinder, courts apply the “same standard of liberality afforded to motions to amend pleadings under Rule 15.” Soler v. G & U, Inc., 86 F.R.D. 524, 528 (S.D.N.Y.1980) (quoting Fair Housing Development Fund Corp. v. Burke, 55 F.R.D. 414, 419 (E.D.N.Y.1972)); accord Smith v. P.O. Canine Dog Chas, No. 02 Civ. 6240, 2004 WL 2202564, at *12 n. ll (S.D.N.Y. Sept. 28, 2004); Momentum Luggage, 2001 WL 58000, at *2; Clarke v. Fonix Corp., No. 98 Civ. 6116, 1999 WL 105031, at *6 (S.D.N.Y. March 1, 1999).
1. Good Cause
The defendants argue that because a deadline of November 17, 2006 for joinder of parties and amendment of pleadings was set in this case pursuant to Rule 16, the joinder of parties after that deadline should only be on “good cause” as provided for by Rule 16(b)(4). They rely upon Parker v. Columbia Pictures Industries, 204 F.3d 326 (2d Cir.2000), which held that “a district court does not abuse its discretion in denying leave to amend the pleadings after the deadline set in the scheduling order where the moving party has failed to establish good cause.” Id. at 340; accord Fahmy v. Duane Reade, Inc., No. 04 Civ. 1798, 2005 WL 2338711, at *4 (S.D.N.Y. Sept. 26, 2005); see also Lincoln v. Potter, 418 F.Supp.2d 443, 453-55 (S.D.N.Y.2006) (holding that motion to amend made after discovery deadline must first satisfy Rule 16(b) and then Rule 15). However, “Parker did not mandate that the ‘good cause’ standard automatically apply in every case, but rather, upheld a trial court’s discretion to deny a late application for failing to meet the ‘good cause’ requirement under Rule 16(b).”1 Calabro v. Stone, No. CV 2003-4522, 2005 WL 327547, at *1 (E.D.N.Y. Jan.27, 2005); see also Zomba Recording Corp. v. MP3.Com, Inc., No. 00 Civ. 6831, 2001 WL 770926, at *1 (S.D.N.Y. July 10, *4132001) (acknowledging Parker but granting motion to amend).2
In any event, Bridgeport has shown good cause for its delay. “[A] finding of good cause depends on the diligence of the moving party.” Lincoln, 418 F.Supp.2d at 454 (quoting Parker, 204 F.3d at 340). “In other words, the movant must show that the deadlines [could] not be reasonably met despite its diligence.” Fahmy, 2005 WL 2338711, at *3 (quoting Rent-A-Center, Inc. v. 47 Mamaroneck Avenue Corp., 215 F.R.D. 100, 104 (S.D.N.Y.2003)). The defendants assert that Bridgeport was aware that UMG provided digital recordings of the plaintiffs’ compositions to MusicNet at least three years ago, as evidenced by “cease and desist” letters that Bridgeport sent to MusicNet in June and July of 2004. (Cease and Desist Letters, attached as Exh. B to Declaration of Robert W. Lehrburger dated Nov. 5, 2007 (“Lehrburger 11/5/07 Decl.”)). They also point to a spreadsheet they produced on October 20, 2006, which lists UMG’s income from downloads of Bridgeport’s compositions; payments are listed from MusicNet as well as other entities, some of which have been named as defendants. (Digital Sales Spreadsheet, attached as Exh. E to Lehrburger 11/5/07 Deck). Therefore, they conclude, diligent practice by the plaintiffs would have resulted in the addition of MusicNet as a defendant long before the deadline expired.
The plaintiffs assert, however, that Music-Net is in quite a different position from most, if not all, of the other entities that engaged in digital retail distribution of their compositions in that MusicNet “licenses music directly from UMG ... and then licenses the music to third parties, providing a ‘white label’ service wherein the consumer believes that they are downloading music from the digital download company (e.g., Yahoo), but in fact MusicNet is providing the technology that allows the downloads and streams to occur.” (Reply Memorandum of Law in Support of Plaintiffs’ Motion to Amend the Complaint (“PI. Reply Memo.”) at 2; Deposition of David Weinberg dated June 21, 2007 (‘Weinberg Dep.”), attached as Exh. E to Busch 11/13/07 Deck, at 228-29; Deposition of John Jones dated Sept. 26, 2007 (“Jones Dep.”), attached as Exh. F to Busch 11/13/07 Deck, at 40). As part of this arrangement, MusicNet assumes responsibility for obtaining licenses from the publishers of music that they release to third parties. (Jones Dep. at 158-59, 219-23). Bridgeport avers that it could not have known the full extent of Mu-sicNet’s activities or that “MusicNet’s unique status warranted their joinder as a party” until document production was made by Mu-sicNet in August 2007 and MusicNet’s desig-nee was deposed on September 26, 2007. (PI. Reply Memo, at 2-5).
The defendants counter that the plaintiffs’ description of how MusicNet’s activities differ from those of other defendants is a “distinction without a difference” since, if the plaintiffs are right about their interpretation of the 1991 PRI agreement, MusicNet would be liable for copyright infringement whether they transmitted the files to the customers themselves or provided the means for others to do so. (Def. Memo, at 15). But the plaintiffs’ account of MusicNet’s unique status is instructive: MusicNet is not merely obtaining licenses from UMG but is itself licensing compositions to third parties.3 The plaintiffs seek to add MusicNet as a defendant “to avoid any potential claim that UMG is not responsible for agreements to which it is not a party.” (PI. Memo, at 17).
Bridgeport moved to amend its pleadings to add MusicNet three weeks after the deposition of Mr. Jones. UMG argues that Mu-sicNet’s status as a “white label” service, and hence its role in licensing compositions to third parties, should have been apparent to Bridgeport from the outset, as it is adver*414tised on MusicNet’s website. (Defendants’ Sur-Reply Memorandum of Law in Opposition to Plaintiffs’ Motion to Amend the Complaint (“Def.Sur-Reply”) at 1-2; Printout of MusicNet Home Page as of July 10, 2004, attached as Exh. A to Declaration of Robert W. Lehrburger dated Nov. 16, 2007). But the mere knowledge that MusicNet offered white label service would not have established that it was engaged in licensing Bridegport’s compositions specifically. Bridgeport reasonably waited until it could inquire further into the extent of MusicNet’s activities with respect to Bridgeport’s compositions before moving to add MusicNet as a defendant. See Friedl v. City of New York, 210 F.3d 79, 88 (2d Cir.2000) (amendment allowed after discovery revealed additional relevant facts). Courts have permitted amendments where the time between a moving party’s discovery of the relevant facts and the filing of the motion to amend was much longer. See, e.g., Securities and Exchange Commission v. PCI Telecommunications, Inc., 207 F.R.D. 32, 34-35 (S.D.N.Y.2002) (plaintiff obtained discovery supporting amendment four months before motion); Green v. Wolf Corp., 50 F.R.D. 220, 223 (S.D.N.Y.1970) (plaintiff aware of facts asserted in amended complaint from outset of case). In sum, Bridgeport has demonstrated that it was sufficiently diligent in moving to amend to satisfy the good cause requirement of Rule 16.
2. Prejudice
The defendants argue that, notwithstanding a showing of good cause for delay, leave to amend to add MusicNet to the action should be denied because they will be substantially prejudiced by such an amendment. See Block v. First Blood Associates, 988 F.2d 344, 350 (2d Cir.1993) (delay, absent bad faith or prejudice, is not a sufficient basis for denying leave to amend); accord Parker, 204 F.3d at 339; Richardson Greenshields Securities, Inc. v. Lau, 825 F.2d 647, 653 n. 6 (2d Cir.1987). In determining whether the defendants would be prejudiced by the amendment, I must consider whether the addition of the proposed defendants “would: (i) require the opponent to expend significant additional resources to conduct discovery and prepare for trial; [or] (ii) significantly delay the resolution of the dispute.” Block, 988 F.2d at 350. The longer the period of unexplained delay, the lesser the showing of prejudice required of the nonmoving party. Evans v. Syracuse City School District, 704 F.2d 44, 47 (2d Cir.1983).
Here, UMG argues that were MusicNet to be added to this action, “all depositions [plaintiffs seek to use against MusicNet would need to be retaken” since MusicNet was not represented at those depositions, leading to the expenditure of additional resources and delaying resolution of this matter. (Def. Memo, at 16). It is unclear, however, exactly how many depositions MusicNet would need to retake or how much additional discovery would be required, given that the claims against them are virtually identical to those against the other defendants. See Hampton Bays Connections, Inc. v. Duffy, 212 F.R.D. 119, 123 (E.D.N.Y.2003) (“repetitive depositions may not be necessary” and “even if additional discovery is needed, such discovery would not be extensive” because new claim “arises from the same set of facts as the original claims”). Moreover, the burden on the current defendants of attending reopened depositions would be less because they have previously prepared for them. Even assuming that additional discovery would impose costs on MusicNet and the current defendants, “[allegations that an amendment will require the expenditure of some additional time, effort, or money do not constitute undue prejudice.” Randolph-Rand Corp. of New York v. Tidy Handbags, Inc., No. 96 Civ. 1829, 2001 WL 1286989, at *4 (S.D.N.Y. Oct.24, 2001) (internal quotation omitted). “[T]he adverse party’s burden of undertaking discovery, standing alone, does not suffice to warrant denial of a motion to amend a pleading.” United States v. Continental Illinois National Bank & Trust Co. of Chicago, 889 F.2d 1248, 1255 (2d Cir.1989); accord A.V. by Versace, Inc. v. Gianni Versace S.p.A., 87 F.Supp.2d 281, 299 (S.D.N.Y.2000).4
*415The interests of judicial economy also favor adding MusicNet as a party to this action over deferring claims against it to separate future action. The plaintiffs’ claims against MusicNet are identical to those already in the case: they concern the distribution to third parties of various digital embodiments of specific compositions and whether such distribution was authorized by the 1991 PRI agreement. See S.S. Silberblatt, Inc. v. East Harlem, Pilot Block Building 1 Housing Development Fund Co., 608 F.2d 28, 48 (2d Cir.1979) (“[T]he burden of undertaking discovery, which [the defendant] would have shouldered had the proposed amendment been incorporated in the complaint as originally filed, hardly amounts to prejudice outweighing the policy of Rule 15(a) in favor of permitting the parties to obtain an adjudication of the merits.”); accord UMG Recordings, Inc. v. Lindor, No. CV-05-1095, 2006 WL 3335048, at *4 (E.D.N.Y. Nov. 9, 2006). Moreover, federal courts have consistently granted motions to amend where, as here, “it appears that new facts and allegations were developed during discovery, are closely related to the original claim, and are foreshadowed in earlier pleadings.” Xpressions Footwear Corp. v. Peters, Nos. 94 Civ. 6136, 95 Civ. 8242, 95 Civ. 8243, 1995 WL 758761, at *2 (S.D.N.Y. Dec.22, 1995).
D. Allegations Regarding Public Performance Rights
Bridgeport seeks to amend the complaint to add allegations that the defendants infringed their right of public performance in the compositions at issue. (PSAC, ¶¶ 26, 27, 34, 42-45, 49, 53-54, 58). The defendants point out that because performance rights fall under a different section of the relevant statute, 17 U.S.C. § 106(4), the plaintiffs are in a sense adding a new basis of liability. They argue that such a change at this late date should be rejected as dilatory.
The plaintiffs’ delay in adding this claim, however, is reasonable. As described above, the plaintiffs already seek to add claims regarding streaming of their copyrighted compositions, and it was previously determined that such claims are encompassed in this action. (6/4/07 Order at 2; 8/1/07 Order). UMG has consented to that change. Currently, there is “vigorous[ ] dispute” as to “whether streaming requires just a license for public performance, or whether both performance and mechanical license [sic] are needed.” Metro-Goldwyn-Mayer Studios, Inc. v. Grokster, Ltd., 454 F.Supp.2d 966, 998 (C.D.Cal.2006). Thus, for Bridgeport to assert claims regarding streaming of its compositions, as all parties agree it should be allowed to do, it may be necessary for it to assert performance rights in the compositions.5 The defendants contend that just because “streaming happens to implicate the right of public performance does not ipso facto bring that right within the scope of this action.” (Def. Sur-Reply at 3). However, it is reasonably likely that full adjudication of Bridgeport’s claims regarding streaming will require an evaluation of its performance rights in the compositions. If Bridgeport wishes to assert that the 1991 PRI agreement reserves to it performance rights in the compositions, it makes little sense to leave that question aside for a subsequent action. See Magee v. Paul Revere Life Insurance Co., 172 F.R.D. 647, 649 (E.D.N.Y.1997) (amendment under Rule 15(a) reflects “public policy favoring the efficient resolution of disputes on their full merits”).
Moreover, as noted above, delay, absent bad faith or prejudice, is not a sufficient basis for denying leave to amend. See Parker, 204 F.3d at 339; Block, 988 F.2d at 350. The defendants contend that Bridgeport has demonstrated bad faith by previously arguing that streaming, while not expressly mentioned in the Amended Complaint, was covered by the “broad lan*416guage” that Bridgeport “intentionally used in drafting [its] pleadings” (Letter of Kenneth E. Gordon, dated May 24, 2007, attached as Exh. 0 to Lehrburger 11/5/07 Decl.), but now arguing that that supposedly “broad language” must be expanded to fully encompass their claim regarding streaming. (Def. Memo at 19). While there is some element of bootstrapping to the plaintiffs’ request, it does not rise to the level of bad faith. Moreover, since the Court has ruled, and all parties now concede, that it makes sense to resolve claims regarding streaming of the plaintiffs’ compositions in this action, it follows that litigation of performance rights in the compositions and with regard to the 1991 PRI agreement should be permitted insofar as they are implicated by streaming.
E. Allegations Regarding Ringtones
Bridgeport also seeks to add allegations concerning the licensing of the disputed musical compositions at issue for use as ring-tones. (PSAC, ¶¶23, 26, 27, 49). Specifically, it alleges that “UMG has recently purported to license Apple to use, reproduce, distribute, or perform compositions by way of ringtones.” (PL Memo, at 7 n. 2). The defendants oppose this change, arguing that Bridgeport lacks a sufficient factual basis for the claim. (Def. Memo, at 20-21).
A motion to amend may be denied as futile if the amendment would not withstand a motion to dismiss pursuant to Rule 12(b)(6). See Oneida Indian Nation, 337 F.3d at 168; Smith v. CPC International, Inc., 104 F.Supp.2d 272, 274 (S.D.N.Y.2000); see also Ryder Energy Distribution Corp. v. Merrill Lynch Commodities Inc., 748 F.2d 774, 783 (2d Cir.1984) (to overcome objections of futility, moving party need only show “at least colorable grounds for relief’). The standard for dismissal under Rule 12(b)(6) was recently clarified by the Supreme Court in Bell Atlantic Corp. v. Twombly, — U.S. —, 127 S.Ct. 1955, 167 L.Ed.2d 929 (2007). There, the Court explained that “[w]hile a complaint attacked by a Rule 12(b)(6) motion to dismiss does not need detailed factual allegations, a plaintiffs obligation to provide the grounds of his entitlement to relief requires more than labels and conclusions, and a formulaic recitation of the elements of a cause of action will not do. Factual allegations must be enough to raise a right to relief above the speculative level.” Id. at —, 127 S.Ct. at 1964-65 (internal citations and quotation marks omitted).
Here, UMG asserts that “Apple does not offer and never has offered any of Plaintiffs’ compositions ... in connection with its ringtone product service.” (Def. Memo, at 20). Moreover, it claims it has never even licensed content to Apple for use as ring-tones, and thus Bridgeport’s claim must fail for lack of an adequate factual basis. (Def. Memo, at 20; Def. Sur-Reply at 6-7).6 But even under the revised standard set forth in Twombly, Bridgeport need only establish a basis to “raise a right to relief above the speculative level”; it need not prove the truth of its claim at this stage. Twombly, — U.S. at —, 127 S.Ct. at 1965. Given that UMG admits having licensed Bridgeport’s compositions to Apple for various other purposes, Bridgeport’s assertion that it has a good faith basis to believe that UMG has also done so for ringtones is sufficient to survive a motion to dismiss. The record is not definitive enough at this stage to support a conclusion that UMG would prevail as a matter of law. If, indeed, Bridgeport lacks a good faith basis for its allegations, the defendants may apply for sanctions at the appropriate time.7
*417F. Factual Supplementation
Finally, Bridgeport seeks to amend its complaint to add factual material that does not alter its substantive legal claims.8 Bridgeport claims that these changes are intended to “supplement the pleadings to conform to the evidence.” (PI. Memo, at 10). The defendants contend that such changes are an improper and unnecessary effort to “gild the lily.” (Def. Memo, at 22-23). Courts have denied leave to amend where “the additional allegations merely reiterate and embroider the claims ... already presented in the original complaint, adding little, if anything, of substance to the case.” Scottish Air International v. British Caledonian Group, PLC, 152 F.R.D. 18, 30 (S.D.N.Y.1993) (quoting Coleman v. Ramada Hotel Operating Co., 933 F.2d 470, 473 (7th Cir.1991)); see also O’Brien v. Price Waterhouse, 740 F.Supp. 276, 284 (S.D.N.Y.1990) (“mere elaboration and increased verbiage concerning the same core allegations initially put forward” deemed insufficient to warrant amendment). Here, however, Bridgeport is amending its complaint to add new substantive claims as well as the factual elaborations. Since the complaint will be amended in any event and the defendants have not demonstrated any prejudice that would result from these factual additions, they will be permitted. In re Enron Corp., 367 B.R. 373, 384 (Bankr.S.D.N.Y.2007) (permitting amendment to add factual allegations even though changes were arguably “superfluous”); Torn v. Rosen, No. 82 Civ. 3130, 1984 WL 734, at *3 (S.D.N.Y. Aug.6, 1984) (permitting amendment even where “[pjlaintiffs have used this opportunity to sharpen, and thereby arguably alter, the facts asserted in the complaint” and treating prejudice as more relevant inquiry).9
Conclusion
For the reasons discussed above, Bridgeport’s motion to amend its complaint is granted.10 Within ten days of the date of this order, counsel shall submit a proposed revised discovery schedule.
SO ORDERED.
Dated Jan. 10,2008.
. Whether the same admonition applies to amendment under Rule 21 is unclear. Since the same liberal standard applies to amendment under Rule 21 as under Rule 15(a), it would be that the same discretionary relationship to the "good cause” requirement applies here.
. The defendants seek to distinguish Zomba by noting that it does not reference Rule 16(b). (Def. Memo, at 12 n. 5). But given that Zomba interprets precisely the same language in Parker upon which defendants rely, it is hard to see why it would not apply here simply because it does not explicitly mention Rule 16(b).
. Bridgeport points out that it does not seek to add as defendants a number of other third parties identified in UMG's spreadsheet who do not engage in the same type of re-licensing activity as MusicNet. (Memorandum in Support of Plaintiffs’ Motion to Amend Complaint ("Pl.Memo.”) at 16-17; Digital Sales Spreadsheet).
. UMG argues that this doctrine was developed in the context of Rule 15 amendment and should *415not apply where amendment is governed by Rule 16. They cite no authority for such a proposition, nor have I found any.
. It is also possible that a plaintiff could prevail in a claim regarding streaming content without asserting public performance rights in the composition. See Grokster, 454 F.Supp.2d at 998 ("[M]usic publishers asserting their mechanical rights have prevailed in at least one infringement action against a streaming service provider.”) (citing Rodgers and Hammerstein Organization v. UMG Recordings, Inc., No. 00 Civ. 9322, 2001 WL 1135811 (S.D.N.Y. Sept.26, 2001)).
. In response to discovery requests for documents reflecting such a licensing agreement, UMG stated that "there are no such documents.” (Response to Plaintiffs Eighth Request for the Production of Documents dated Oct. 11, 2007, attached as Exh. R to Lehrburger 11/5/07 Decl., at 3-4).
. The defendants also strongly dispute Bridgeport’s contention that "[t]he very act of licensing [content for use as ringtones] to Apple constitutes infringement by UMG.” (PL Memo, at 7 n. 2; Def. Memo, at 20-21; Def. Sur-Reply at 6-7). As Bridgeport is entitled to pursue its allegations that Apple has in fact distributed its compositions for use as ringtones, I need not reach that issue here. In any event, I note that the Second Circuit has recently suggested that unauthorized licensing, even absent a further infringing act, may be sufficient to allege a violation of 17 U.S.C. § 106. See Davis v. Blige, 505 F.3d 90, *417105 n. 13 (2d Cir.2007) ("The unauthorized li-censor also arguably violates the exclusive rights of the copyright owner to authorize who may use the copyright.") (internal quotations omitted).
. For instance, Bridgeport has added information regarding the alleged locations of the defendants' servers (PSAC, VH 31, 55), and the success of Apple’s iPod sales. (PSAC, V 35).
. Bridgeport also seeks to add a claim for "separate statutory damages [of $150,000] for each separate agreement” identified in its complaint. (SAC, ¶ 40). The parties spill a great deal of ink debating the merits of this claim but are in agreement that this motion is not the proper procedural vehicle for such a debate. (Def. Memo, at 9 n. 4; PI. Reply Memo, at 7-9; Def. Sur-Reply Memo, at 4-6). I concur and decline to address the issue at this time.
. The defendants’ motion to submit a sur-reply is granted, and I have considered that submission in reaching my determination.