Josh Groban keeps rocking the boat

The creamy-voiced singer has been venturing from his early semi-operatic sound. His latest album, 'All That Echoes,' points toward arena rock. And scales the charts.Earlier this month Josh Groban's "All That Echoes" knocked Justin Bieber's new album out of the top spot on the Billboard 200, and that's not the crooner's only incursion into territory normally reserved for pop stars.