Lady Gaga has teamed up with Cher on her new album! Here are a few other strange musical hook-ups: Weezer, Lil Wayne, Will.i.am, Mick Jagger, Snoop Dogg, Buzz Aldrin, Metallica, Lou Reed. Keep up-to-date with the celebrity world: Like us on Facebook: ow.ly Or Follow us on Twitter: ow.ly