I had that job for about a year after quitting teaching. Had to pass a test to get it, identifying music clips from rap to classical. Gave it up as I was at times quite fearful for my safety. And had too many late nights and heard too many pub singers murdering songs, mostly the Mavericks "Dance the night away". Most performers were very helpful and understood what I was about. It was the punters in the pubs and clubs who wanted to lynch me. One reason that I never actually got to sample a folk club was that the assumption seemed to be that a lot of PD stuff would be played/sang in these, and our time would be better spent noting down the more commercial stuff. The corollary of that of course is that Pete Ryder and all the other great writers in our genre would be vastly under-recorded and under-paid, while the people who are already raking it in from record sales raked in a little bit more. No such thing as a perfect system.