Pastiche

The Oxford English Dictionary defines pastiche as "a novel, poem, painting, etc., incorporating several different styles, or made up of parts drawn from a variety of sources.

The video at the bottom shows three different artists performing the song "Wish You Were Here" originally performed by Pink Floyd. Corey Taylor of Slipknot, Slash formerly of Guns N' Roses and Jerry Cantrell of Alice in Chains came together to perform a hit song of another popular band. Since this is a cover it's also and example of homage to Pink Floyd, but I feel that this is a better example of pastiche because these artists all have different styles and they came together on one stage to make the song their own.

http://www.youtube.com/watch?v=_svHcg_3MTU