I always remembered this movie because it was so vacuous. Half the film was shot by a pool, with a minimal plot. There would be a little action, sometimes with Rocky Graziano as the boy's assistant doing his shtick about boxing, after which the the boy hero would ask him to put on a record. Then the audience saw the performer doing a number. Thus, only half the film deals with the storyline. It wouldn't surprise me if the segments with the performances were shot separately for promotional purposes and then included in the film. I believe some of the performances were later cut from that film and occasionally turn up on television today. This and films like it are a major source of performances from early rockers.