There you go. I wasn't sure of the site's names I visited because it was pretty much a temp thing for me. There was one site where the actual authors of the songs would frequent and the forums were split up into their own section. Too bad I don't remember the place.
You can probably get an idea if you search for the songwriter in the abc files I posted. I do remember getting the forums links from the official forums, though. Might want to search there as well. They have a great tutorial on it.