JC's Irish ABC music collection
JC's Irish ABC music collection

The .abc files here and in the subdirectories have some sort of association with Ireland.

Here are some web sites on related topics:

Information about tunes, composers, etc.
Miscellaneous Irish-music.
The Fiddler's Companion
Andrew Kuntz's collection.
Nigel Gatherer's online collection
The Northern Fiddler
Larry Sanger's collection.

If you don't have ABC software, you might like to try a tool that I'm working on that returns the tunes in various formats: CLICK HERE. This will return the page you're looking at now, but the ABC files will be expanded to show all the tunes, and each tune will have a line of links to return it in a number of different formats.