American jazz saxophonist, clarinetist, arranger, composer, and bandleader. His 1961 Impulse! album The Blues and the Abstract Truth is regarded as one of the most significant recordings of its era. The centerpiece of the album is the definitive version of Nelson's composition, "Stolen Moments". Other important recordings from the early 1960s are More Blues and the Abstract Truth and Sound Pieces, both also on Impulse!.