Inspired by some recent listening: Bumper music is a fine way to set the mood of a radio talk show. However, unless the bumper music is your opening theme, closing theme, or a prelude to an interview with a musician, the length of the music shouldn't make listeners wonder, "Is the host ever getting back to the show, or is this song going to play in its entirety?"
At the risk of sounding obvious, a talk show is called a talk show for a reason.
