Bobby McFerrin in the context of A cappella

Accompaniment is the musical part which provides the rhythmic and/or harmonic support for the melody or main themes of a song or instrumental piece. There are many different styles and types of accompaniment in different genres and styles of music. In homophonic music, the main accompaniment approach used in popular music, a clear vocal melody is supported by subordinate chords. In popular music and traditional music, the accompaniment parts typically provide the "beat" for the music and outline the chord progression of the song or instrumental piece.

The accompaniment for a vocal melody or instrumental solo can be played by a single musician playing an instrument such as piano, pipe organ, or guitar. While any instrument can in theory be used as an accompaniment instrument, keyboard and guitar-family instruments tend to be used if there is only a single instrument, as these instruments can play chords and basslines simultaneously (chords and a bassline are easier to play simultaneously on keyboard instruments, but a fingerpicking guitarist can play chords and a bassline simultaneously on guitar). A solo singer can accompany themself by playing guitar or piano while they sing, and in some rare cases, a solo singer can even accompany themself just using their voice and body (e.g., Bobby McFerrin).

"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. 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.

The song also peaked at number 11 on the Billboard Hot Black Singles chart and number seven on the Billboard Hot Adult Contemporary Tracks chart. It hit number one in Australia and stayed there for 7 weeks. It was also a hit in the United Kingdom, reaching number two during its fifth week on the UK Singles Chart. In Canada, the song reached number one in its eighth week. One critic noted it as a "formula for facing life's trials".

The 31st Annual Grammy Awards were held on February 22, 1989, at Shrine Auditorium, Los Angeles. They recognized accomplishments by musicians from the previous year. This was also the first Grammy Awards Ceremony with a separate rap section.

Album of the Year went to George Michael for Faith, and Song of the Year went to Bobby McFerrin for "Don't Worry, Be Happy".

Yo-Yo Ma (born October 7, 1955) is an American cellist. Born to Chinese parents in Paris, he was regarded as a child prodigy, and began to study the cello with his father at age four. At the age of seven, Ma moved with his family to Boston and later to New York City, where he continued his cello studies at the Juilliard School before pursuing a liberal arts education at Harvard University. He has performed as a soloist with orchestras around the world, recorded more than 92 albums, and received 19 Grammy Awards.

In addition to recordings of the standard classical repertoire, Ma has recorded a wide variety of folk music, such as American bluegrass music, traditional Chinese melodies, the tangos of Argentine composer Astor Piazzolla, and Brazilian music. He has also collaborated with artists from a diverse range of genres, including Bobby McFerrin, Carlos Santana, Chris Botti, Diana Krall, James Taylor, Miley Cyrus, Zakir Hussain, and Sting.