Hi bronzewound! Welcome to Guitar Tricks! Glad to hear you're enjoying the site so far. I'll pass along the request for more Celtic music to our lesson production team. We're always working to add content and appreciate any suggestions you have. If you have particular songs you'd like to request, you can do so in our Song Request forum here:

http://www.guitartricks.com/forum/forumdisplay.php?f=58