Music on old radio detective programs

The quality of the music played on the old detective radio shows varied greatly. For example, the music, both theme and background, was outstanding on Richard Diamond. On the other hand, it was (in my opinion) pretty irritating on Philo Vance and the Michael Shayne episodes that starred Jeff Chandler. It changed over the course of the Johnny Dollar series, some of it being very good and some of it not so much. Sadly, on Vance and Shayne programs, the music made what were otherwise pretty good programs into somewhat of an endurance contest.