For at least two centuries, and arguably much longer, Ireland has exerted an important influence on the development of the traditional, popular and art musics of other regions, and in particular those of Britain and the United States. During the past decade or so, the traditional musics of the so-called Celtic regions have become a focus of international interest. The phenomenal success of shows such as Riverdance (which appeared in 1995, spawned from a 1994 Eurovision Song Contest interval act) brought Irish music and dance to a global audience and played a part in the further...