This entire weekend has basically been unofficially declared Prince Weekend, and the tributes and covers are continuing to roll in. Bearded mountain-man/ascendant country music star Chris Stapleton played a show at Berkeley’s Greek Theatre last night, and he closed out his encore with a cover of Prince’s “Nothing Compares 2 U,” complete with purple stage lighting. He also honored the late Merle Haggard by covering “Silver Wings,” one of the 10 best Merle Haggard songs. Watch Stapleton’s performance of “Nothing Compares 2 U” below.