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.
Vivian Campbell Vivian Patrick Campbell (born 25 August 1962) is a Northern Irish rock guitarist. He came to prominence in the early 1980s as a member of Dio, and has been a member of Def Leppard since 1992 (replacing Steve Clark). Campbell has also worked with Thin Lizzy, Whitesnake, Sweet Savage, Trinity, Riverdogs, and Shadow King.