Hero Worship was Hal Crook's fifth album as a leader, and the second album he released for RAM Records.
This album was Crook's first recording using the 5-voice digital harmonizer, which connected to a microphone attached to his trombone's bell. The harmonizer generate up to 5 additional "voices" at preset intervals, which allowed Crook to play chordal lines using an otherwise multiphonic instrument. The early-generation harmonizer did not distinguish between major and minor intervals, which created a distinctive effect.