Artists like Gil Evans

James Peter Giuffre was an American jazz clarinetist, saxophonist, composer, and arranger. He is known for developing forms of jazz which allowed for free interplay between the musicians, anticipating forms of free improvisation.

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.