Please answer the following question: Information: - Ulster (or "Cuige Uladh" , Ulster Scots: "Ulster" or "Ulster") is a province in the north of the island of Ireland. In ancient Ireland, it was one of the fifths ruled by a "ri ruirech", or "king of over-kings". - De Dannan (originally "De Danann") is an Irish folk music group. They were formed by Frankie Gavin (fiddle), Alec Finn (guitar, bouzouki), Johnny "Ringo" McDonagh (bodhran) and Charlie Piggott (banjo) as a result of sessions in Hughes's Pub in An Spideal, County Galway, subsequently inviting Dolores Keane (vocals) to join the band. The late fiddler Mickey Finn is also acknowledged to have been a founder member. - Sir George Ivan Morrison, OBE (born 31 August 1945), known as Van Morrison, is a Northern Irish singer and songwriter with a reputation for being at once stubborn, idiosyncratic, and sublime. His studio albums "Astral Weeks" and "Moondance", and the live album "It's Too Late to Stop Now", are acclaimed as among the greatest recorded. In 2016, he was knighted for his musical achievements and his services to tourism and charitable causes in Northern Ireland. - Alec Finn is an English-born traditional musician who is famous for his unique style of accompaniment on the bouzouki. He is best known for founding De Dannan with Frankie Gavin, Ringo MacDonagh and Charlie Piggott after a series of music sessions at Tigh Hughes, An Spideal, Co. Galway in 1975. - Nollaig Casey (also known as Nollaig Ni Chathasaigh ) is an Irish fiddle player, and has an international reputation as one of Ireland's finest fiddle players. By the time she was eleven years old she could play violin, piano, tin whistle and uilleann pipes. During her teenage years she learned to play in both the classical and traditional musical traditions. She won several All-Ireland titles for fiddle and traditional singing culminating in the award to her in 1972 for the best all-round performer. - Planxty is an Irish folk music band formed in January 1972, consisting initially of Christy Moore (vocals, acoustic guitar, bodhran), Andy Irvine (vocals, mandolin, mandola, bouzouki, hurdy-gurdy, harmonica), Donal Lunny (bouzouki, guitars, bodhran, keyboards), and Liam O'Flynn (uilleann pipes, tin whistle). They quickly revolutionized and popularized Irish folk music, touring and recording to great acclaim. - Patrick Street is an Irish folk group founded by Kevin Burke (formerly of The Bothy Band) on fiddle, Andy Irvine (Sweeney's Men, Planxty) on mandolin, bouzouki, harmonica and vocals, Jackie Daly (De Dannan) on button accordion, and Arty McGlynn (Van Morrison) on guitar. - Avalon Sunset is the nineteenth studio album by Northern Irish singer-songwriter Van Morrison. It was released in 1989 by Mercury Records to both commercial and critical success. - Four Men and a Dog is an Irish traditional band that emerged in 1990 during the Belfast Folk Festival. The band plays Irish traditional music with a mixture of different other genres, including rock, jazz, blues, bluegrass, swing, salsa, polka and even rap. They originally had their name because of former singer Mick Daly's nick; "The Black Dog". Mick is now replaced with Kevin Doherty. - A guitarist (or a guitar player) is a person who plays the guitar. Guitarists may play a variety of guitar family instruments such as classical guitars, acoustic guitars, electric guitars, and bass guitars. Some guitarists accompany themselves on the guitar by singing or playing the harmonica. - Aidan Coffey is an Irish traditional accordionist from Co. Waterford ( Ireland ) . He recorded with Irish traditional fiddle players Seamus Creagh and Frankie Gavin and with guitar players Mick Daly and Arty McGlynn . He was a member of the traditional band De Dannan from 1988 to 1995 . - Liam O'Flynn (born 15 April 1945) is an Irish uilleann piper and Irish traditional musician. In addition to a solo career and his work with the group Planxty, O'Flynn has recorded with many international musical artists, including Christy Moore, Donal Lunny, Andy Irvine, Kate Bush, Mark Knopfler, the Everly Brothers, Emmylou Harris, Mike Oldfield, Mary Black, Enya and Sinead O'Connor. - The British Isles are a group of islands off the north-western coast of continental Europe that consist of the islands of Great Britain, Ireland and over six thousand smaller isles. Situated in the North Atlantic, the islands have a total area of approximately 315,159km, and a combined population of just under 70 million. Two sovereign states are located on the islands: Ireland (which covers roughly five-sixths of the island with the same name) and the United Kingdom of Great Britain and Northern Ireland. The British Isles also include three Crown Dependencies: the Isle of Man and, by tradition, the Bailiwick of Jersey and the Bailiwick of Guernsey in the Channel Islands, although the latter are not physically a part of the archipelago. - The guitar is a musical instrument classified as a string instrument with anywhere from four to 18 strings, usually having six. The sound is projected either acoustically, using a hollow wooden or plastic and wood box (for an acoustic guitar), or through electrical amplifier and a speaker (for an electric guitar). It is typically played by strumming or plucking the strings with the fingers, thumb and/or fingernails of the right hand or with a pick while fretting (or pressing against the frets) the strings with the fingers of the left hand. The guitar is a type of chordophone, traditionally constructed from wood and strung with either gut, nylon or steel strings and distinguished from other chordophones by its construction and tuning. The modern guitar was preceded by the gittern, the vihuela, the four-course Renaissance guitar, and the five-course baroque guitar, all of which contributed to the development of the modern six-string instrument. - Dolores Keane (born 26 September 1953) is an Irish folk singer and occasional actress. She was a founding member of the successful group De Dannan, and has since embarked on a very successful solo career, establishing herself as one of the most loved interpreters of Irish song. - Folk music includes both traditional music and the genre that evolved from it during the 20th century folk revival. The term originated in the 19th century but is often applied to music that is older than that. Some types of folk music are also called world music. "Traditional folk music" has been defined in several ways: as music transmitted orally, music with unknown composers, or music performed by custom over a long period of time. It has been contrasted with commercial and classical styles. - Arty McGlynn is an Irish guitarist born in Omagh, County Tyrone. In addition to his solo work, he has collaborated with different notable groups such as Patrick Street, Planxty, Four Men and a Dog, De Dannan and the Van Morrison Band. He played guitar on the critically acclaimed 1989 Van Morrison album, "Avalon Sunset". He has also played duo performances and recordings with uilleann piper Liam O'Flynn and his wife, fiddle player Nollaig Casey. - Ireland (Ulster-Scots: ) is an island in the North Atlantic. It is separated from Great Britain to its east by the North Channel, the Irish Sea, and St George's Channel. Ireland is the second-largest island of the British Isles, the third-largest in Europe, and the twentieth-largest on Earth. After reading the paragraphs above, we are interested in knowing the entity with which 'aidan coffey' exhibits the relationship of 'occupation'. Find the answer from the choices below. Choices: - actress - band - commercial - fiddler - founder - guitarist - king - member - musician - performer - singer - sovereign - speaker - united kingdom
A:
musician