Don't Worry, Be Happy Don't Worry, Be Happy "Don't Worry, Be Happy" is a popular worldwide hit song by musician Bobby McFerrin. Released in September 1988, it became the first "a cappella" song to reach number one on the "Billboard" Hot 100 chart, a position it held for two weeks. The Indian mystic and sage Meher Baba (1894–1969) often used the expression "Don't worry, be happy" when cabling his followers in the West. In the 1960s, the expression was printed up on inspirational cards and posters of the era. In 1988, McFerrin noticed a similar poster in the apartment of the jazz duo Tuck
A cappella ye the Lord." In keeping with this philosophy, early Russian "musika" which started appearing in the late 17th century, in what was known as "khorovïye kontsertï" (choral concertos) made a cappella adaptations of Venetian-styled pieces, such as the treatise, "Grammatika musikiyskaya" (1675), by Nikolai Diletsky. Divine Liturgies and Western Rite masses composed by famous composers such as Peter Tchaikovsky, Sergei Rachmaninoff, Alexander Arkhangelsky, and Mykola Leontovych are fine examples of this. Present-day Christian religious bodies known for conducting their worship services without musical accompaniment include some Presbyterian churches devoted to the regulative principle of worship, Old Regular Baptists, Primitive Baptists,