Buzz·Posted on Oct 3, 2009PS22 Chorus Sings For Beyonce and Lady GaGaPS22's hit the big time!by Matt StoperaBuzzFeed StaffLinkFacebookPinterestTwitterMail View this video on YouTube A couple weeks ago they were on VH1's Divas Live, and now they're performing at a luncheon for Beyonce and GaGa. Here they are singing Beyonce's "Halo."