Question: One of the musicians who released the Grammy-nominated "Fallling Slowly"  is also a guitarist for what Irish group?

Context articles: Ronan Keating
Seanchas
Feadóga Stáin
The Swell Season (album)
Hayley Westenra
Rogha: The Best of Clannad
In Fortune's Hand
Beginnings: The Best of the Early Years
Butterfly Child
Glen Hansard

Ronan Patrick John Keating (born 3 March 1977) is an Irish recording artist, singer, musician, and philanthropist.
 He debuted in 1994 alongside Keith Duffy, Michael Graham, Shane Lynch, and Stephen Gately, as the lead singer of Irish group Boyzone.
 His solo career started in 1999 and has recorded nine albums.
 He gained worldwide attention when his single "When You Say Nothing at All" was featured in the film "Notting Hill" and peaked at number one in several countries.
 As a solo artist, he has sold over 20 million records worldwide alongside the 25 million records with Boyzone, and in Australia, he is best known as a judge on "The X Factor" from 2010 until 2014 and a coach on "The Voice" in 2016.
 Keating is active in charity work and has been a charity campaigner for the Marie Keating Foundation, which raises awareness for breast cancer and is named after his mother who died from the disease in 1998.
"Seanchas" is a pop song by Irish group Clannad.
 It was released in 1996 and was their first single from their album "Lore".
 The single's title means 'Storytelling' or 'Lore' in the Irish language and is pronounced 'shan-ahas'.
Feadóga Stáin, Mary Bergin's debut album, has been credited with establishing the tin whistle as one of the first tier among the standard instruments of Irish Traditional Music.
 Members of Irish group De Dannan contributed accompaniment and the album is mostly a trio of tin whistle, Irish bouzouki and Bodhrán (Irish frame drum) .
 This album has been cited by Joanie Madden as highly influential in the development of her own playing, and is generally considered by critics and scholars as a "definitive" or milestone 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.
Hayley Dee Westenra (born 10 April 1987) is a New Zealand singer, classical crossover artist, songwriter, and UNICEF Ambassador.
 Her first internationally released album, "Pure", reached No. 1 on the UK classical charts in 2003 and has sold more than two million copies worldwide.
 "Pure" is the fastest-selling international début classical album to date, having made Westenra an international star at age 16.
 In August 2006, she joined the Irish group Celtic Woman, was featured on their "Celtic Woman: A New Journey" CD and DVD, toured with them on their 2007 Spring Tour, and was also featured on their DVD, "The Greatest Journey: Essential Collection", released in 2008.
 Westenra has produced five New Zealand number one studio albums, holding the title for the most number one records for any New Zealand act, a record shared with alternative rock band Shihad since the release of their 2014 album, FVEY.
Rogha: The Best of Clannad is the fourth greatest hits album released by Irish group Clannad.
 The word "rogha" is the Irish word for ""choice""; it's pronounced "row-ah" ("row" as in an argument).
"In Fortune's Hand" is a single by Irish group Clannad.
 It was released in 1990 and was the first single released to promote their album "Anam".
Beginnings: The Best of the Early Years is a greatest hits compilation album by Irish group Clannad.
 The albums contains tracks from most of the group's 1970s albums, and was released in August 2008.
Butterfly Child is an Irish group led by singer/songwriter Joe Cassidy, currently based in Los Angeles, California.
 Described as "purveyors of shimmering, oceanic rock," they have released three full-length albums and numerous singles/EPs.
 Their new album "Futures" was released by Dell'Orso Records on 27 November 2015.
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.