Enter The Haggis - Lanigan's Ball - But I'll keep it to Celtic rock/punk acts instead, especially since some of the best don't cross the Mississippi very often, let alone the Rockies.

It's A Long Way To the Top - Dropkick Murphys

Gaelic Storm - The Night I Punched Russell Crowe.

And keeping it to three because it's a Celtic number.

As a side note, I have seen Great Big Sea live. Awesome night.