He also lent his vocals to four soundtracks for motion pictures: True Grit (1969), Norwood (1970), Rock-a-Doodle (1992), and the 2014 documentary film Glen Campbell: I'll Be Me.
Han medvirkede endvidere på fire soundtracks til spillefilmene True Grit (1969), Norwood (1970), Rock-a-Doodle (1992) og dokumentarfilmen fra 2014 Glen Campbell: I'll Be Me.