After shocking some with his 2006 collaboration of putting Coldplay's Chris Martin on "Beach Chair" [click to read], Jay-Z is reportedly returning the favor.

According to Coldplay's website, Jay-Z will be appearing as a guest to the superstar Rock group's remix to present Viva La Vida album cut "Lost!"

"In the spirit of trying to do things a bit differently and keep everything fresh, we are going to do a few musical moves that we have not previously attempted. Firstly, in a few weeks we are going to release a version of 'Lost!' which has a guest appearance on it in the form of Jay-Z," reads the website.

Martin and wife Gwyneth Paltrow were also vocal supporters of defending Jay-Z's Glastonbury appearance this past summer [click to read].