Robert Vernor Hammack, Jr. was an American musician, originally from Texas, whose principal instrument was jazz piano. He led a prolific career in Los Angeles as a pianist, organist, conductor, arranger, and composer in live venues, broadcast studios for radio and television, and recording studios for records, radio, television, and film. Hammack flourished in a wide spectrum of genres that included dixieland, Blues, swing, sweet dance music (e.g., Lawrence Welk), easy listening, gospel, liturgical jazz, musical theatre, Tin Pan Alley, classical, and film score.

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