The Bass Player and the Blonde(1977)

George Mangham is a former composer and bass player in a band struggling for money. Stuck in an engagement with Mrs Merino, a wealthy older woman, while on the run and owing money to gangsters who are after him for debts he owes them, life is not great for George. But it gets even more complicated when he literally bumps into Terry Weston, daughter of gangster Charlie Weston, who has run away from home with her marriage to the rich but nerdy Nigel only a few days away. Little do either realize just what trouble and turmoil lays ahead for both of them...