Question: Jon Fratelli and Morten Harket, have which occupation in common?

full_context: Document 1: List of awards and nominations received by A-ha: This is a comprehensive list of major music awards received by A-ha, a Norwegian new wave band. Formed in 1982 by Morten Harket, Magne Furuholmen, and Paul Waaktaar-Savoy, A-ha have been one of the most popular European acts in the world since the mid-1980s. The band has sold more than 100 million albums and singles worldwide, and has been nominated for one Grammy Award, more than any other Norwegian rock band.
Document 2: Simply Red: Simply Red are a British soul and pop band which formed in 1985 in Manchester. The lead singer of the band is the singer and songwriter Mick Hucknall, who, by the time the band was disbanded in 2010, was the only original member left. Since the release of their debut studio album "Picture Book" (1985), they have had ten songs reach top 10 in the UK Singles Chart, including "Holding Back the Years" and "If You Don't Know Me by Now", both of which reached number one on the US "Billboard" Hot 100. They have had five number one albums in the UK, with their 1991 album, "Stars", one of the best-selling albums in UK chart history.
Document 3: Jon Fratelli: Jon Fratelli (born John Paul Lawler, 4 March 1979, Glasgow, Scotland) is a Scottish musician and songwriter best known for his work with the band The Fratellis. He has also played in a band called Codeine Velvet Club, and also performed as a solo artist.
Document 4: Owl John: Owl John is a solo musical project by Frightened Rabbit vocalist and guitarist Scott Hutchison, formed in 2014. Regarding Owl John and his decision to release a solo record, Hutchison noted, "It was approximately 10 years ago that I started a band called Frightened Rabbit. In that time I've dedicated so much of my life to that good wee band with a stupid name, I felt it was time to indulge [Owl] John."
Document 5: List of A-ha tours: A-ha is a Norwegian synthpop act, founded in 1982 by Morten Harket, Magne Furuholmen and Paul Waaktaar-Savoy in Oslo. Since 1985, A-ha has performed throughout the world, including tours in North America, South America, Europe, Australia, Japan, and China.
Document 6: Paul Weller: John William "Paul" Weller, Jr. (born 25 May 1958) is an English singer, songwriter, musician. Weller achieved fame with the punk rock/new wave/mod revival band The Jam. He had further success with the blue-eyed soul music of The Style Council (1983–89), before establishing himself as a solo artist in 1991.
Document 7: Paul Waaktaar-Savoy: Paul Waaktaar-Savoy (born Pål Waaktaar Gamst, 6 September 1961) is a Norwegian musician and songwriter. He was named Knights First Class of the Order of St. Olav by King Harald for his services to Norwegian music and his international success. Pål Savoy is best known for his work as the main songwriter and guitarist in the Norwegian pop band A-ha. He has written or co-written most of the band's biggest hits, including "The Sun Always Shines on T.V.", "Hunting High and Low", "Take On Me", the James Bond theme "The Living Daylights" and the ballad "Summer Moved On". In addition, Waaktaar-Savoy is also a painter. The band A-ha has sold more than 50 million albums worldwide.
Document 8: Morten Harket: Morten Harket (born 14 September 1960) is a Norwegian musician, best known as the lead singer of the synthpop/rock band A-ha, which released ten studio albums and topped the charts internationally after their breakthrough hit "Take on Me" in 1985. A-ha disbanded in 2010 after they played their last gig in Oslo. In 2015, after each member pursued his own artistic path, a-ha reunited to produce a new album, "Cast In Steel", and perform a world tour, kicking off at Rock in Rio in Rio de Janeiro, Brazil on 27 September 2015. Harket has also released six solo albums. Before joining A-ha in 1982, Harket had appeared on the Oslo club scene as the singer for blues outfit Souldier Blue.
Document 9: Fran Healy (musician): Francis "Fran" Healy (born 23 July 1973) is a Scottish musician. He is the lead singer and main songwriter of the band Travis, having written nearly all of the songs on their first six studio albums, with the 8th being more of a co-written work. He is based in Berlin. Healy released his debut solo album titled "Wreckorder" in October 2010, which featured Paul McCartney on bass.
Document 10: A-ha: A-ha (usually stylized as a"-h"a; ] ) is a Norwegian band formed in Oslo in 1982. The band was founded by Morten Harket (vocals), Magne Furuholmen (keyboards) and Pål Waaktaar-Savoy (guitars). The group rose to fame during the mid-1980s after being discovered by musician and producer John Ratcliff, and continued global success in the 1990s and 2000s.
Document 11: Magne Furuholmen: Magne Furuholmen (born 1 November 1962) is a Norwegian musician and visual artist. Furuholmen, better known to music fans by his stage name Mags, is the keyboardist of the synthpop/rock band A-ha, and co-wrote many of the band's hits including "Take on Me", "Stay on These Roads", "Manhattan Skyline", "Cry Wolf", "Forever Not Yours", "Analogue (All I Want)", and "Foot of the Mountain".
Document 12: The Fratellis: The Fratellis are a Scottish rock band from Glasgow, formed in 2005. The band consists of lead vocalist and guitarist Jon Fratelli (born John Lawler), bass guitarist Barry Fratelli (born Barry Wallace), and drummer and backing vocalist Mince Fratelli (born Gordon McRory). Their singles "Chelsea Dagger" and "Whistle for the Choir" were both top ten hits in the UK charts.
Document 13: Scott Law: Scott Law is an American singer-songwriter, record producer, and multi-instrumentalist known for his work with guitar and mandolin. Based in Portland, Oregon, he has been a professional musician since 1992, performing within genres such as rock, blues, bluegrass, and Americana with groups such as The String Cheese Incident. In 1999 Law founded Scott Law Music. After performing with numerous bands, Law released his first solo album as a singer-songwriter, "Deliver" with the Scott Law Band, in 2005. This was followed by several other albums, including the acoustic album "Black Mountain" in 2013.
Document 14: John Frusciante: John Anthony Frusciante ( ; born March 5, 1970) is an American guitarist, singer, producer and composer. He is best known as the former guitarist of the rock band Red Hot Chili Peppers, from 1988 until 1992, and again from 1998 until 2009. He recorded five studio albums with them.
Document 15: Wild Seed (album): Wild Seed is the second studio album and first English-language album by Norwegian pop singer Morten Harket. The album was released on 4 September 1995 through Warner Bros. Records. After a-ha went on a hiatus in 1994, Harket began recording "Wild Seed" with British record producer Christopher Neil, who previously worked with the band on their fourth studio album, "East of the Sun, West of the Moon" (1990). "Wild Seed" charted at number one in Norway and at number 89 in the United Kingdom. It has since sold 160.000 copies in Norway.
ground_truth: musician