Biffy Clyro are a Scottish rock band that formed in Kilmarnock, East Ayrshire, composed of Simon Neil (guitar, lead vocals), James Johnston (bass, vocals) and Ben Johnston (drums, vocals). Currently signed to 14th Floor Records, they have released seven studio albums, four of which (Puzzle, Only Revolutions, Opposites and Ellipsis) reached the top five in the UK Albums Chart, with their sixth studio album, Opposites claiming their first UK number-one album. After their first three albums, the band expanded their following significantly in 2007 with the release of their fourth, Puzzle, creating more mainstream songs with simpler rhythms and distancing themselves from the more unusual dissonant style that was present in their previous three albums. Puzzle peaked at number 2 on the official UK album charts on 16 June 2007.

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 (where it was engineered by Mike Fraser), and The Farm Studio in Gibsons. From these sessions the song "Semi-Mental" was released as a digital download on 25 December. On 5 March 2007 "Saturday Superhouse" was released, reaching No. 13 on the UK Singles Chart, the band's highest single chart position to date.  Puzzle was released in June and helped the band to reach their highest UK Albums Chart position ever, hitting No. 2 in the first week of release, also reaching No. 17 in Ireland, and No. 39 in the overall world charts. The album is certified Gold in the UK, having sold over 220,000 copies, and as of February 2009 has sold over 300,000 worldwide. This album is notable for having somewhat more straightforward song structures and a more melodic overall sound than their previous work, while still retaining some more unusual elements. Puzzle was voted the best album of 2007 by Kerrang! and Rock Sound. On 25 August, it was announced that "Machines" would be the next single from Puzzle, which was released on 8 October.  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 fan base. The band also played the Download 2007, Glastonbury 2007, Reading and Leeds Festival and T in the Park for a record seventh time. The band opened for Linkin Park during January on their European tour. In 2008, the band toured with Queens Of The Stone Age on their European and North American tours for Era Vulgaris, and opened for New Jersey rockers Bon Jovi at Twickenham during the Lost Highway Tour. In December 2008 the band played their biggest headline shows, including a date at Glasgow's 10,000 capacity SECC.

What songs were on the album
This album is notable for having somewhat more straightforward song structures and a more melodic overall sound than their previous work,