discussed Cited "see, e.g." Commonwealth v. Brown See also Commonwealth v. Breakiron, 556 Pa. 519, 528 , 729 A.2d 1088, 1092 (1999), cert. denied, 528 U.S. 1169 , 120 S.Ct. 1193 , 145 L.Ed.2d 1098 (2000) (issue not waived when PCRA Petitioner raised issue at the first opportunity he was no longer represented by trial counsel); Commonwealth v. Green, 551 Pa. 88, 92 , 709 A.2d 382, 384 (1998) (claim of ineffectiveness must be raised at the earliest possible stage in proceedings at which counsel whose effectiveness is challenged no longer represents defendant).