The monumentally gifted Bobby McFerrin will forever be known for his 1988 hit "Don't Worry, Be Happy," which featured the multi-tracked singer accompanying himself. However, his vocal chords are as limber as a rubber band, and he doesn't need any studio wizardry to astound you. Instead of following up that on success, McFerrin started a large choir -- his Voicestra -- and concentrated on work that has generally been outside of either the pop or jazz worlds. While it is gratifying to...  [+]