If you're a Josh Groban fan, you probably know that he got his big break when producer David Foster hired him to sing "The Prayer" with Celine Dion at a Grammy rehearsal as a stand in for Celine's ...
Before he became a household name, Josh Groban was that mop-haired, 17-year-old music student who made headlines after standing in for Andrea Bocelli during a 1999 Grammy rehearsal with Celine Dion.