His experimentations were partly financed by composing film music for Catch Us If You Can (1965), The Shuttered Room (1967), The Strange Affair (1968), I Start Counting (1969) and The Abominable Dr. Phibes (1971).
Seine Experimente konnte er teilweise über seine Filmmusiken für Catch Us If You Can (1965), The Shuttered Room (1967), The Strange Affair (1968), I Start Counting (1969) oder The Abominable Dr. Phibes (1971) finanzieren.