Joe Zawinul in the context of "Cannonball Adderley"

Robert Keith McFerrin Jr. (born March 11, 1950) is an American singer, songwriter, and conductor. His vocal techniques include 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 performs and records regularly as an unaccompanied solo vocal artist. He has frequently collaborated with other artists from both the jazz and classical scenes.

McFerrin's song "Don't Worry, Be Happy" is the only acapella track to ever reach No. 1 in the US, which it reached in 1988 and additionally won Song of the Year and Record of the Year honors at the 1989 Grammy Awards. McFerrin has also worked in collaboration with jazz fusion instrumentalists including pianists Chick Corea (of Return to Forever), Herbie Hancock (of The Headhunters), and Joe Zawinul (of Weather Report), drummer Tony Williams, and cellist Yo-Yo Ma.

Weather Report was an American jazz fusion band active from 1970 to 1986. The band was founded in 1970 by Austrian keyboardist Joe Zawinul, American saxophonist Wayne Shorter, Czech bassist Miroslav Vitouš, American drummer Alphonse Mouzon and American percussionists Don Alias and Barbara Burton. The band was initially co-led by Zawinul and Shorter but as the 1970s progressed, Zawinul became the primary composer and creative director of the group. Other prominent members throughout the band's history included bassists Jaco Pastorius, Alphonso Johnson and Victor Bailey, drummers Chester Thompson and Peter Erskine, and percussionists Airto Moreira and Alex Acuña. A quintet of Zawinul and Shorter plus a bassist, a drummer, and a percussionist was the standard formation for Weather Report.

The band started as a free improvising group with avant-garde and experimental electronic leanings (pioneered by Zawinul); when Vitouš left Weather Report (due mostly to creative disagreements), Zawinul increasingly steered the band towards a funky, edgy sound incorporating elements of R&B and native musics from around the world. Zawinul used the latest developments in synthesizer technology, and he took advantage of a large variety of sounds and tone colors to make the band stand out. During the first half of their career, Weather Report were seen as one of the defining acts in modern jazz, winning the DownBeat "best album award" five times in a row.