"Don't Worry, Be Happy" is a 1988 song by Bobby McFerrin, released as the first single from his album Simple Pleasures (1988). It was the first a cappella song to reach number-one on the Billboard Hot 100 chart, a position it held for two weeks. Originally released in conjunction with the film Cocktail, the song peaked at number-one on September 24, 1988, displacing "Sweet Child o' Mine" by Guns N' Roses.

Robert Keith McFerrin Jr. is an American jazz singer, songwriter, and conductor. He is known for his vocal techniques, such as singing fluidly but with quick and considerable jumps in pitch—for example, sustaining a melody while also rapidly alternating with arpeggios and harmonies—as well as scat singing, polyphonic overtone singing, and improvisational vocal percussion. He is widely known for performing and recording regularly as an unaccompanied solo vocal artist. He has frequently collaborated with other artists from both the jazz and classical scenes.