THe BBC has a record library that you can phone. Details can be had by ringing the BBC, although I can't give you a number. Radio 4 used to have a 'can you tell me' spot, where punters would phone or write in and say 'what is this piece of music, who wrote it, where can I get it?' and the library and research staff would be dispatched to try and find it.

Don't know if they still do that programme, but you got a real eclectic mix!

LTS