He wants it all. He has already racked up a No. 1 single, Don't Worry, Be Happy, an infectious bit of island-inclined, jazz-inflected pop that is giddy and good-natured enough to turn a forced march into a dance contest. Simple Pleasures, the album on which Happy appears, has already sold close to 1.5 million copies in the U.S., and is occupying impressive territory on the Billboard album charts: No. 5 and climbing.
Wait, there's more. He has provided the a cappella accompaniment for three animated Just So stories shown on Showtime and narrated by Jack Nicholson, recorded the theme for The...