One of the musicians who released the Grammy-nominated "Fallling Slowly"  is also a guitarist for what Irish group?
The Swell Season (album) The Swell Season is the self-titled and first album by the duo The Swell Season, (Glen Hansard and Markéta Irglová), released in 2006. "Falling Slowly" went on to be nominated for a Grammy and win the Academy Award for Best Original Song in 2008.
At First Light At First Light is an Irish Celtic music group. At First Light comprises Uilleann Piper John McSherry, fiddle player Dónal O'Connor and Francis McIlduff.