So Cruel

"So Cruel" is a song by rock band U2. It is the sixth track on their 1991 album Achtung Baby, concluding side one of the album. The song was written at Elsinore in Dalkey. While audio engineer Flood changed reels to listen to a demo of another song, lead singer Bono began to improvise a song on guitar. The rest of the band quickly joined in, creating the first take of the song. It was developed as an acoustic track, with Flood adding overdubs and additional elements later. Bassist Adam Clayton and Flood noted that the technology in the studio was crucial in transforming the acoustic song into the final mix.

During the recording sessions for Achtung Baby, guitarist the Edge separated from his wife, Aislinn O'Sullivan. The separation had a major effect on the development of the song, as Bono channelled their pain into the lyrics. Bono said "there were lots of other things going on internally within the band and outside it, and I was working through all of that", noting that the Edge's separation from Aislinn was just one component of that. Thematically the song is about unrequited love, jealousy, obsession, and possessiveness. The track was favourably received by critics.