Armando Trovajoli composed and directed a brilliant lounge-style soundtrack based on the main theme. It is introduced in the opening credits and sung by Mal dei Primivites on track1, and is then reprised with captivating instrumental arrangements. For the four protagonists, Maestro Trovajoli composed a jazz motif with a spylike atmosphere. Armando Trovajoli performs the scat singing with an airy piece using organ and tempo and performs the main theme on the piano. For this LP we were able to use the mono tapes from the recording session.