performed on the Main Stage at the T in the Park, Oxegen and Reading and Leeds music festivals in 2010. The band were also slated to perform at New Zealand's largest music festival Rhythm & Vines at Waiohika Estate Vineyard in Gisborne on 29 December, but had to pull out due to "minor medical procedures" required by two band members. 2011–2014: Opposites On 2 and 3 July 2011 Biffy Clyro supported Foo Fighters in front of 130,000 fans (65,000 each night) at the Milton Keynes Bowl (National Bowl) in the U.K. On Saturday 9 July 2011, Biffy Clyro headlined the main stage (Apollo Stage) at Sonisphere Festival at Knebworth House. The following day, they headlined the main stage (West Stage) at Wakestock in Cardigan Bay, North Wales. Biffy Clyro opened for Metallica in Bangalore, India in 2011.The band revealed via the NME that they would release two studio albums in 2012, The Land at the End of Our Toes, and The Sand at the Core of Our Bones. From 17 May 2012, the band allowed fans to watch the recording process of The Land at the End of Our Toes and The Sand at the Core of Our Bones via a webcam link-up on their official website. The official Biffy Clyro website | biffyclyro.com The live feed has confirmed the involvement of frequent Biffy Clyro producer Garth Richardson, who also produced Puzzle and Only Revolutions. On 30 July 2012, the band announced on Twitter that a new track titled "Stingin' Belle" would be given its official premiere in the UK on Zane Lowe's Radio 1 show the following evening, and that the music video for the song would be available from 9pm for 12 hours to members of the band's official fan club. At 19:37 BST on Tuesday 31 July, Simon Neil confirmed on Zane Lowe's show on BBC Radio 1 that the new album title would be Opposites . Their new single titled Black Chandelier premièred on BBC Radio 1 on 19 November 2012. The band announced they would be playing a large arena tour through March/April 2013, including London's The O2 Arena, with City and Colour in support. On Sunday 3 February 2013, Opposites topped the UK Albums Charts, giving Biffy Clyro their first number one album. The next day, it was announced on BBC Radio 1 by Zane Lowe that they were the second headliner for Reading