There have been some terrible songs coming out of the GAA Championships this summer (looking at you Mayo), but maybe the best effort yet has been made by Éanna Mulvihill and Oisín Hickey from Clare. Although, that might have something to do with Banner Bound's uncanny resemblance to Wheels by the Foo Fighters (below).
http://www.youtube.com/watch?v=ONkiLR5Ehys