 Around 1969, Troup collaborated with entertainer Tommy Leonetti, writing the lyrics for Leonetti's song "My City of Sydney".While he relied on songwriting royalties, Troup worked as an actor, appearing in "Bop Girl Goes Calypso" (1957), "The High Cost of Loving" (1958), "The Five Pennies" (1959), and playing musician Tommy Dorsey in the film "The Gene Krupa Story" (1959).He appeared as himself in the short-lived NBC television series "Acapulco".