Check out their performances! Lady Gaga sings Speechless with Elton John on this one:

http://www.youtube.com/watch?v=27u1zKDgVOs&feature=player_embedded

And she performs Stand By Me with Sting on this one:

http://www.youtube.com/watch?v=S2ergGCUHZ0&feature=player_embedded

And a bunch sing "Don't Stop Believin'" on this one. xD

http://www.youtube.com/watch?v=PcIEEdTiNak&feature=player_embedded

Seriously, the haters who say she can't sing .. have gotta be hating for the sake of hating. Lol. Enjoy. heart