page_title: Songs of Innocence (U2 album)
section_title: Innocence + Experience Tour
hierarchical_section_title: Songs of Innocence (U2 album) / Innocence + Experience Tour
caption_attribution_description: The video cage used on U2's Innocence + Experience Tour, pictured at the United Center in Chicago, IL on June 29, 2015
context_page_description: Songs of Innocence is the thirteenth studio album by Irish rock band U2, released on 9 September 2014. It was produced by Danger Mouse, with additional production from Paul Epworth, Ryan Tedder, Declan Gaffney, and Flood. The album was announced at an Apple Inc. product launch event and released the same day to all iTunes Store customers at no cost. It was exclusive to iTunes, iTunes Radio, and Beats Music until 13 October 2014, when it received a physical release on Island and Interscope Records. The digital release made the record available to more than 500 million iTunes customers, for what Apple CEO Tim Cook marketed as "the largest album release of all time".
  After the relatively lukewarm commercial performance of their previous record, No Line on the Horizon, lead singer Bono expressed uncertainty about the band's ability to remain musically relevant. During the five-and-a-half-year gestation period for Songs of Innocence—the longest gap between albums of their career—the group reportedly worked on several projects with multiple producers, including an aborted companion to their previous record called Songs of Ascent.
context_section_description: On 14 May 2015, U2 embarked on a worldwide concert tour called the Innocence + Experience Tour. It was U2's first time playing arenas since 2005–2006 on their Vertigo Tour. Comprising 76 shows over two legs, the tour visited North America from May through July, and Europe from September through December. The band structured their concerts around a loose narrative of "innocence" passing into "experience", with a fixed set of songs for the first half of each show and a varying second half, separated by an intermission–a first for U2 concerts. The stage spanned the length of the venue floor and comprised three sections: a rectangular segment that illuminated as an "I" to represent "innocence"; a smaller circular stage that illuminated as an "e" to represent "experience"; and a walkway between them to represent the transition between the two themes. A 96-foot-long (29 m) double-sided video screen was suspended above and parallel to the walkway; the structure featured an interior catwalk between the screens, allowing the band members to perform amidst the video projections. U2's sound system was moved to the venue ceilings and arranged in an oval array, in hopes of improving acoustics by evenly distributing sound throughout the arena. In total, the tour grossed $152.2 million from 1.29 million tickets sold. The final date of the tour, one of two Paris shows rescheduled due to the 13 November 2015 attacks in the city, was filmed for the video Innocence + Experience: Live in Paris and broadcast on the American television network HBO.
caption: The centerpiece of the Innocence + Experience Tour's set was a 96-foot-long "video cage" that was suspended over the walkway connecting the main stage and B-stage.
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