concurring:
I agree with the result reached in the opinion of Judge Wieand, however, I cannot accept the alternative holding of harmless error. See Commonwealth v. Hart, 471 Pa. 271, 277, 370 A.2d 298, 301 (1977) (Nix, J. dissenting opinion joined by Roberts, J.); Commonwealth v. Saunders, 459 Pa. 677, 683, 331 A.2d 193, 195 (1975) (Nix, J., dissenting opinion joined by Roberts, J.).