Josh Groban

Joshua Winslow Groban (born February 27, 1981) is an American singer, songwriter, and actor. His first four solo albums have been certified multi-platinum, and he was charted in 2007 as the number-one best selling artist in the United States, with over 22.3 million records. As of 2012, he had sold over 25 million records worldwide.

David Foster called Josh to stand in for an ailing Andrea Bocelli to rehearse a duet, "The Prayer", with Celine Dion at the rehearsal for the 1998 Grammy Awards. Rosie O'Donnell immedia…