Mark Stoermer, there’s just no shortage of talent oozing from the group. Fortunately, Rock Band granted us the opportunity to step in with “When You Were Young.” The gritty alternative anthem wasn’t too demanding but still added a distinct sentimental flair to our setlists. âSay It Ainât Soâ â Weezer ( Rock Band) If we’re being honest, we would have been happy to infuse our setlists with any of Weezer‘s songs. That said, “Say It Ain’t So” was a particularly perfect addition. The moderately paced, relatively simplistic track was a nice break from some of the more demanding ones in the