How many movies have Armando Trovajoli and John Karlsen collaborated on?

They have worked on 5 movies together! Their first movie together was Werewolf in a Girls' Dormitory (1961) while their highest rated movie together was Totò e Peppino divisi a Berlino (1962). They have not worked together since Stanza 17-17 palazzo delle tasse, ufficio imposte (1971). They are most known for their comedy films together.