I've been wondering what a perl pattern is. It may be a snippet of abc.

Perl is a scripting language, great (amongst other things) for searching through chunks of text. Being completely useless at perl I've never tried that option out.

Can you post a little abc of the tune and see if JC's finds it for you?

Yes! The more distinctive the chunk of abc the better, but I have had some success with that method in the past.