Definition 

I'm not happy with the definition as it stands, and I would like to see a reference for the assertion that Horslips were the first to name the genre. "Celtic" in modern usage means more than the Ancient Celts, and much music that involves the lives of Modern Celts is considered Celtic. Thus, there's no reason a band like The Pogues - who sung frequently about Irish matters - should be considered less Celtic simply because they were focused on the present. Similarly, I see no reason Horslips' "driving hard rock" is more suited towards being real "Celtic Rock" than the blues influenced music of L&L; era Fairport.