One aspect of this is that this forum is a great repository of musical knowledge and history, and you never can tell when one of the experts here might know something that will finally enable you to track down what you've been looking for. Perhaps a song you thought was pop or rock or C&W is actually folk-based. But on the other hand, I agree that there is a danger of the forum going off-topic. When I started here, I did not realize the "folk" nature of Mudcat, because I found this page, not the one higher up on the hierarchy. Perhaps it should be announced on every HTML page that the focus is folk, but other types of queries will be tolerated kindly.