He also recorded for film soundtracks: "Jeanne et les garçons formidables", with music of Philippe Miller, and "Un monde entre deux", music by Bernard Cavanna.Franck's reputation as a composer of modern accordion literature was launched when his composition "Boite à Rythme" was performed and won on the international accordion competition in Klingenthal, Germany. Boite à Rythme is a very modern and technical work, with jazzy rhythms.