 Because of copyright problems, in the European version of the movie the song  "Tonight Is So Right For Love" (by Sid Wayne and Abner Silver) which was  based on the melody of "Bacarolle" by Jaques Offenbach, was substituted with  "Tonights All Right For Love" (by Wayne, Silver and Joe Lilley), which had  similar lyrics but was based on the melody of "Tales From The Vienna Woods"  by Johann Strauss.