Don Walker was a prolific Broadway orchestrator, who also composed music for musicals and one film and worked as a conductor in television.

Music Theatre International (MTI) is a theatrical licensing agency based in New York City and founded in 1952 by American composer and lyricist Frank Loesser and orchestrator Don Walker. Along with licensing the rights to Loesser's works, the firm licenses production rights of over 500 Broadway, Off-Broadway, and West End musicals. Cameron Mackintosh became a partner in 1990 and majority owner in 2015.