Download Festival is a British rock festival, held annually at Donington Park in Leicestershire, England, since 2003. It is the most popular British summer rock and heavy metal festival and has hosted some of the biggest names in rock and metal including Saxon, Black Sabbath, Metallica, Rammstein, Iron Maiden, Slayer, Muse, Motörhead, Aerosmith, AC/DC, Def Leppard, Kiss, Judas Priest, Status Quo, Motley Crue, Journey, ZZ Top, Whitesnake, Thin Lizzy, and Guns N' Roses. One innovation at the 2015 festival was the massive technological surveillance by police in conjunction with festival organizers Live Nation UK. RFID wristbands and facial recognition technology was used to compare visual scans of attendees against a European criminal database.
Slipknot is an American heavy metal band from Des Moines, Iowa. The band was founded in September 1995 by percussionist Shawn Crahan and bassist Paul Gray. After several lineup changes in its early years, the band settled on nine members for more than a decade: Corey Taylor, Mick Thomson, Jim Root, Paul Gray, Craig Jones, Sid Wilson, Shawn Crahan, Chris Fehn and Joey Jordison. Gray died on May 24, 2010, and was replaced from 2011–14 by former guitarist Donnie Steele. Jordison left the band on December 12, 2013. Steele left during the recording sessions for .5: The Gray Chapter because he wanted to focus on his marriage. The band is now touring with replacement musicians Alessandro Venturella on bass and Jay Weinberg on drums. After the departure of Jordison, as of December 2015[update] the only founding member in the current lineup is percussionist Shawn Crahan; the other remaining members of Slipknot have been members since the release of the band's 1999 eponymous debut.
Slipknot is well known for its attention-grabbing image, aggressive style of music, and energetic and chaotic live shows. The band rapidly rose to success following the release of their eponymous debut album in 1999. The 2001 follow-up album, Iowa, made the band more popular. After a brief hiatus, Slipknot returned in 2004 with Vol. 3: (The Subliminal Verses), before going on another hiatus and returning in 2008 with its fourth album, All Hope Is Gone, which debuted at number one on the Billboard 200 chart. After another long hiatus, Slipknot released its fifth studio album, .5: The Gray Chapter, in 2014. The band has released a live album titled 9.0: Live, a compilation album titled Antennas to Hell, and four live DVDs. In 2015, Slipknot headlined the Download Festival in the UK for the third time.