Roots of Oscar Brown Jr.

Robert Henry Timmons was an American jazz pianist and composer. He was a sideman in Art Blakey's Jazz Messengers for two periods, between which he was part of Cannonball Adderley's band. Several of Timmons' compositions written when part of these bands – including "Moanin'", "Dat Dere", and "This Here" – enjoyed commercial success and brought him more attention. In the early and mid-1960s he led a series of piano trios that toured and recorded extensively.

Ramón "Mongo" Santamaría Rodríguez was a Cuban percussionist and bandleader who spent most of his career in the United States. Primarily a conga drummer, Santamaría was a leading figure in the pachanga and boogaloo dance crazes of the 1960s. His biggest hit was his rendition of Herbie Hancock's "Watermelon Man", which was inducted into the Grammy Hall of Fame in 1998. From the 1970s, he recorded mainly salsa and Latin jazz, before retiring in the late 1990s.