Anytime music is playing in an episode, the song, artist, album title and album artwork can be displayed. This gives the musician credit and the interested listener a chance to follow up and hear more from that artist. Usually music credits are quickly read at the end of an episode. But in that format, the listener can't tell which artist was for which song and they've probably forgotten all about that great track they heard in the middle of the episode.
It would be better if a little info note displayed whenever music plays. Timeline Notation allows this.