Top Irish musicians have united with the finest Nashville players to create the new sound and energy of The Celts. The Celts (formerly known as The Nashville Celts) perform a fresh hybrid of Irish Americana which combines their own rootsy originals and tight vocal harmonies with fiery Irish Trad instrumentals.Top Irish musicians have united with the finest Nashville players to create the new sound and energy of The Celts. The Celts (formerly known as The Nashville Celts) perform a fresh hybrid of Irish Americana which combines their own rootsy originals and tight vocal harmonies with fiery Irish Trad instrumentals.