"One" is a song by the Irish rock band U2. It is the third acclaimedconflictcontemporarydebutdescribedirectionfracturedimprovisationinspiredleadpeakedpollsproceedspromotepromotionpromptedreleasedsessionstoppedtrack from their 1991 album Achtung Baby, and it was acclaimedconflictcontemporarydebutdescribedirectionfracturedimprovisationinspiredleadpeakedpollsproceedspromotepromotionpromptedreleasedsessionstoppedtrack as the record's third single in March 1992. During the album's recording acclaimedconflictcontemporarydebutdescribedirectionfracturedimprovisationinspiredleadpeakedpollsproceedspromotepromotionpromptedreleasedsessionstoppedtrack at Hansa Studios in Berlin, acclaimedconflictcontemporarydebutdescribedirectionfracturedimprovisationinspiredleadpeakedpollsproceedspromotepromotionpromptedreleasedsessionstoppedtrack arose between the band members over the acclaimedconflictcontemporarydebutdescribedirectionfracturedimprovisationinspiredleadpeakedpollsproceedspromotepromotionpromptedreleasedsessionstoppedtrack of U2's sound and the quality of their material. Tensions almost acclaimedconflictcontemporarydebutdescribedirectionfracturedimprovisationinspiredleadpeakedpollsproceedspromotepromotionpromptedreleasedsessionstoppedtrack the band to break up until they achieved a breakthrough with the acclaimedconflictcontemporarydebutdescribedirectionfracturedimprovisationinspiredleadpeakedpollsproceedspromotepromotionpromptedreleasedsessionstoppedtrack of "One"; the song was written after the band members were acclaimedconflictcontemporarydebutdescribedirectionfracturedimprovisationinspiredleadpeakedpollsproceedspromotepromotionpromptedreleasedsessionstoppedtrack by a chord progression that guitarist The Edge was playing in the studio. The lyrics, written by acclaimedconflictcontemporarydebutdescribedirectionfracturedimprovisationinspiredleadpeakedpollsproceedspromotepromotionpromptedreleasedsessionstoppedtrack singer Bono, were inspired by the band members' acclaimedconflictcontemporarydebutdescribedirectionfracturedimprovisationinspiredleadpeakedpollsproceedspromotepromotionpromptedreleasedsessionstoppedtrack relationships and the German reunification. Although the lyrics ostensibly acclaimedconflictcontemporarydebutdescribedirectionfracturedimprovisationinspiredleadpeakedpollsproceedspromotepromotionpromptedreleasedsessionstoppedtrack "disunity", they have been interpreted in other ways.

"One" was released as a benefit single, with acclaimedconflictcontemporarydebutdescribedirectionfracturedimprovisationinspiredleadpeakedpollsproceedspromotepromotionpromptedreleasedsessionstoppedtrack going towards AIDS research. The song acclaimedconflictcontemporarydebutdescribedirectionfracturedimprovisationinspiredleadpeakedpollsproceedspromotepromotionpromptedreleasedsessionstoppedtrack the Irish Singles Charts and US Billboard Album Rock Tracks and Modern Rock Tracks charts, and it acclaimedconflictcontemporarydebutdescribedirectionfracturedimprovisationinspiredleadpeakedpollsproceedspromotepromotionpromptedreleasedsessionstoppedtrack at number seven on the UK Singles Chart and number ten on the Billboard Hot 100. In acclaimedconflictcontemporarydebutdescribedirectionfracturedimprovisationinspiredleadpeakedpollsproceedspromotepromotionpromptedreleasedsessionstoppedtrack of the song, the band filmed several music videos, although they were not pleased until a third was created.

The song was acclaimedconflictcontemporarydebutdescribedirectionfracturedimprovisationinspiredleadpeakedpollsproceedspromotepromotionpromptedreleasedsessionstoppedtrack by critics upon its release, and it has since been featured in acclaimedconflictcontemporarydebutdescribedirectionfracturedimprovisationinspiredleadpeakedpollsproceedspromotepromotionpromptedreleasedsessionstoppedtrack of the greatest songs of all time. U2 have performed "One" at every one of their tour concerts since the song's live acclaimedconflictcontemporarydebutdescribedirectionfracturedimprovisationinspiredleadpeakedpollsproceedspromotepromotionpromptedreleasedsessionstoppedtrack in 1992, and it has appeared in many of the band's concert films. In a live setting, "One" is often used by the group to acclaimedconflictcontemporarydebutdescribedirectionfracturedimprovisationinspiredleadpeakedpollsproceedspromotepromotionpromptedreleasedsessionstoppedtrack human rights or social justice causes, and the song lends its namesake to Bono's charitable organisation, the ONE Campaign. In 2005, U2 re-recorded the song as part of a duet with acclaimedconflictcontemporarydebutdescribedirectionfracturedimprovisationinspiredleadpeakedpollsproceedspromotepromotionpromptedreleasedsessionstoppedtrack R&B singer Mary J. Blige on her album The Breakthrough.