Bobby McFerrin - Don't Worry Be Happy

Release date: 1988 
McFerrin recorded it using only his body to make all the sounds. The phrase "Don't Worry Be Happy" came from the Indian guru Meher Baba.
"Don't Worry, Be Happy" became the first a cappella song to reach number one on the Billboard Hot 100 chart. This won Grammy Awards for Best Pop Vocal Performance and Song Of The Year in 1989.
Album: Simple Pleasures