Joe McElderry was the 2009 X Factor winner, beating Olly Murs in the final show. Joe was beaten to the Christmas number one spot, an accolade achieved by all previous X Factor winners, by Rage Against The Machine following a Facebook campaign.
John Barrowman is a multi-talented performer who has appeared in BBC's Doctor Who and Torchwood, as well as being a judge on TV talent shows How Do You Solve a Problem Like Maria?, I'd Do Anything and Any Dream Will Do with Andrew Lloyd-Webber.
John Legend is a Grammy Award-winning American singer-songwriter, who is known for his heartfelt songwriting and soulful singing. As well as being a successful recording artist in his own right, John has collaborated with many other well known artists on chart-topping tracks.
Jools Holland was one of the founder members of the band Squeeze, with who he played keyboards until 1981. Jools has released more than twenty albums since 1978 including Tom Jones and Jools Holland, World of His Own and Beatroute. Jools has had his own television show, Later... with Jools Holland, since 1992 and hosts his annual Hootenanny.
American singer-songwriter and multi-instrumentalist Josh Groban saw his latest studio album, Stages, reach No.1 in the UK chart during April 2015. Three of his previous albums also reached No.1 in the US Billboard chart.
Journey is best known for their Power Ballads including Don't Stop Believin', Who's Crying Now and Open Arms. Many of their albums have achieved multi-platinum status and at the height of their career in the early eighties, the album Escape went nine times platinum.
Journey South's career was kick-started by their third-place standing in the 2005 X Factor series. The group consists of brothers Andy and Carl Pemberton. Their first album, entitled Journey South reached the number one spot in the UK and have formed their own label, ANCA.
Justin Bieber propelled himself to stardom by recording covers of well known songs and uploading them to YouTube. By the end of 2010, Bieber had received more than 10 million hits on the site and was well on his way to becoming a worldwide superstar.
Justin Timberlake will visit the UK for a series of arena dates in the summer of 2018. The American pop icon will perform shows in Glasgow, London, Birmingham and Manchester during the European leg of his Man of the Woods Tour.
Kaiser Chiefs burst onto the music scene in 2005 with the release of their debut album Employment. The record was a huge success and resulted in Kaiser Chiefs winning three BRIT Awards: 'Best British Band', 'Best Rock Act' and 'Best New Artist'.
Kanye West is an eighteen time Grammy Award winning American rapper. His hit singles include Stronger, Gold Digger and Love Lockdown. All but one of Kanye West's five solo studio albums have reached number one on the US Billboard chart, including his last solo album My Beautiful Dark Twisted Fantasy.
Alternative rockers Kasabian are reknowned for their live performances. An estimated 100,000 festival goers witnessed the band's triumphant headline performance at this year's Glastonbury festival.
Since releasing her debut album in 2004, Welsh mezzo-soprano Katherine Jenkins has become one of the best known and most successful classical crossover artists in the world. Katherine's first seven albums all reached the No.1 position in the UK classical charts, with total sales in excess of 5 million records.
Since breaking into the mainstream in 2003 with The Closest Thing To Crazy, Katie Melua has continued to produce stunning and haunting songs. The album, Call Off The Search, includes a single written about the late Eva Cassidy called Faraway Voice which Katie herself wrote. Katie's fourth album, released in 2010 and entitled The House, has tracks on it written by well-known songwriters and was produced by William Orbit.
Katy Perry returns to the UK in the summer of 2018 with Witness: The Tour. The US singer-songwriter will perform concerts in London, Birmingham, Sheffield, Liverpool, Manchester, Glasgow and Newcastle during the tour.
Keane were responsible for 2004's best-selling album, Hopes and Fears. The award-winning group continued to produce influential tracks on their later albums: Under The Iron Sea and Perfect Symmetry. Keane have toured the UK extensively following the release of each album.
Since winning American Idol in 2002, Kelly Clarkson has experienced huge success as a solo artist – selling more than 25 million albums worldwide and picking up three Grammy Awards along the way.
Kendrick Lamar will visit the UK & Ireland in February 2018 for a series of arena shows. The American rapper and songwriter will perform shows in Dublin, Birmingham, Manchester, Glasgow and London during The Damn Tour.
Kesha made her breakthrough in 2009 singing alongside Flo Rida on his hit single Right Round. Kesha's debut single, Tik Tok, hit the number one spot in several countries. Kesha's debut album, Animal, was released in early 2010 and went straight to number one in the US Billboard Chart.
When Kids In Glass Houses first came to prominence in 2007, Kerrang! magazine named them as one of 'The Hottest New Bands On The Planet'. Since then the South Wales based indie-rock quintet have released two albums - Smart Casual in 2008 and Dirt in March 2010. Both albums were very well received and have helped to cement their reputation as a band who are definitely going places.