Don't Worry - Be Happy by Bobby McFerrin
http://www.youtube.com/watch?v=l9K4BKkLaCI
Don’t Worry, Be Happy is the title and principal lyric of a song by musician Bobby McFerrin. In September of 1988, it became the first a cappella song to reach number one on the Billboard Hot 100 chart and held that position for two weeks. At the 1989 Grammy Awards, “Don’t Worry Be Happy” won the awards for Song of the Year, Record of the Year, and Best Male Pop Vocal Performance. The song’s title is taken from a famous quote by Meher Baba.
