Hi, Timothy - I moved you over to this existing thread with the same name. Take a look at the crosslinks at the top of this page and see if any of the related threads can help you.
Can't say I've heard a recording of "Garryowen" that's as memorable as what you're seeking - but somebody here must have.
I gather you're looking for a song that would really make a fella buckle his swash. My dad says that happens only in Marine OCS. [grin] He's 82 now, but he can still sing "Stout-Hearted Men" with the best of 'em. There's something about the tune of "Garryowen" that doesn't sound particularly swashbuckling to me - to me, the tune sounds a bit too delicate.
-Joe Offer-