Task: Question Generation
Input (English): Passage: In 1995, following a long break, U2 contributed "Hold Me, Thrill Me, Kiss Me, Kill Me" to the soundtrack album of the film Batman Forever. The song was a hit, reaching number one in Australia and Ireland, number two in the UK, and number 16 in the US. In November, the band released an experimental album called Original Soundtracks 1, a collaboration with Brian Eno, who contributed as a full songwriting partner and performer. Due to his participation and the record's highly experimental nature, the band chose to release it under the moniker "Passengers" to distinguish it from U2's conventional albums. Mullen said of the release: "There's a thin line between interesting music and self-indulgence. We crossed it on the Passengers record." It was commercially unnoticed by U2 standards and it received generally mixed reviews. The single "Miss Sarajevo" (featuring Luciano Pavarotti) was among Bono's favourite U2 songs.U2 began work on their next studio album, Pop, in mid-1995, holding recording sessions with Nellee Hooper, Flood, and Howie B. The band mixed the contrasting influences of each producer into their music, in particular Howie B's experiences with electronica and dance music. Mullen was sidelined due to back surgery in November, prompting the other band members to take different approaches to songwriting, such as programming drum loops and playing to samples provided by Howie B. Upon Mullen's return in February 1996, the group began re-working much of their material but struggled to complete songs, causing them to miss their mid-year deadline to complete the record. Further complicating matters, the band allowed manager Paul McGuinness to book their 1997–1998 PopMart Tour with the album still in progress; Bono called it "the worst decision U2 ever made". Rushed to complete the album, the band delayed its release date a second time from the 1996 holiday season to March 1997, cutting into tour rehearsal time. Even with the additional recording time, U2 worked up to the last minute to complete songs.
Output (English): What year did U2 release the album Pop?