It's Trad, Dad!, known in the U.S. as Ring-A-Ding Rhythm, is a musical comedy and one of the first films put out by predominantly horror company Amicus Productions. It is also one of director Richard Lester's first films.

The hero and heroine want to popularize a trad jazz in their town. Some older people feel displeased about a trad jazz, and prevent their trying. The hero and heroine go to London television studio to ask trad jazz musician to support their trial. Written by Rena Okada