Biffy Clyro (colloquially referred to as Biffy)[1] are a Scottish rock group from Ayrshire whose members are Simon Neil (lead vocals, guitar), James Johnston (vocals, bass guitar) and Ben Johnston (vocals, drums). Although the band have always had a dedicated following, and have been around since the mid-1990s as well as producing an EP and four albums, it is only in 2007 with their fourth album, Puzzle that they have found real commercial success. This album is seen as less heavy and experimental, and more widely accessible and has won wide critical acclaim. Puzzle has been championed on TV and radio, and Biffy have promoted it with a tour and many festival performances over the summer of 2007 (including a snippet of a live performance being used as the opening titles for the BBC coverage of T in the Park). Biffy's sound is a heavy but melodic mixture of guitar, bass and drums, with all three band members contributing to vocals. They are known for complex and interwoven guitar picks, strums and melodies, that change many times within each track. "'Mon the Biffy!" is a well known chant among Biffy fans;[2] usually shouted in between songs at gigs, or before the band comes on stage. In 2006, Biffy Clyro left Beggars Banquet and signed a deal with 14th Floor, an offshoot of Warner Bros. In September, the band went to Canada to record their fourth album at The Warehouse Studio in Vancouver, and The Farm Studio in Gibsons, which they finished recording in November. From these sessions the song "Semi-Mental" was released as a digital download on 25 December. In 2007, the song "Saturday Superhouse" was released on 5 March, where it reached #13 on the UK Singles Chart; the band's highest single chart position to date. Living is a Problem Because Everything Dies and Folding Stars were also released as singles from the album on 14 May and 16 July respectively. Puzzle was released to critical acclaim, and helped the band to reach their highest UK Albums Chart position ever, reaching #2 in the first week of release. Support slots for acts such as Muse at the new Wembley Stadium, The Who, Red Hot Chili Peppers, and The Rolling Stones were significant in expanding Biffy's fanbase. The band also played the Download 2007, Glastonbury 2007, Reading and Leeds Festival and T in the Park for a record seventh time. On 25 August, it was announced that "Machines" would be the next single from Puzzle, and was released on October 8. The band also recently opened for Linkin Park at The O2 Arena on 28 January and [[29 January] 2008.