Look at this three performances of Def Leppard with country singer Taylor Swift, Bon Jovi and Rihanna also Kiss on stage with American Idol Adam Lambert. Another country singer Carrie Underwood performs with Aerosmith's Steven Tyler, also Fergie of The Black Eyed Peas sings Sweet Child O'mine with Slash at the guitar.
Just for fun (and because I wanted six videos to fill in my raster) I found a video from the Rock Of Ages-movie.

Hate Taylor Swifts outfit, horrible shoes with that dress xD Fergie sings awful! Ö

XOXO
Lynn Richard.