One of the musicians who released the Grammy-nominated "Fallling Slowly"  is also a guitarist for what Irish group?
Glen Hansard Glen Hansard (born 21 April 1970) is an Irish songwriter, actor, vocalist and guitarist for Irish group The Frames, and one half of folk rock duo The Swell Season. He is also known for his acting, having appeared in the BAFTA-winning film "The Commitments", as well as starring in the film "Once", which earned him a number of major awards, including an Academy Award for Best Song.
Adam Clayton Adam Charles Clayton (born 13 March 1960) is an Irish musician, best known as the bass guitarist of the rock band U2. He has resided in County Dublin since the time his family moved to Malahide when he was five years old in 1965.