Written and released at the height of the AIDS epidemic, “One Sweet Day” is about the sadness of losing loved ones, regret about taking them for granted, and faith that we can be reunited in heaven. “When you lose people that are close to you,” Carey said discussing the message of the song, “it changes your life and changes our perspective.”
Co-written by Boyz II Men and Carey, the song originally appeared on Carey’s 1995 album Daydream. Widely praised by critics, it was the most successful single ever on the Billboard chart up to that point, sitting at the number 1 spot for a record 16 weeks. “On ‘One Sweet Day,'” wrote New York Times music critic Stephen Holden, “the singer joins forces with Boyz II Men, those masters of pleading post-doo-wop vocal harmonies for a tender eulogy that suggests that the singers have been personally touched by the AIDS crisis.” In a readers poll conduct by Rolling Stone, the track was heralded as the Best Collaboration of All Time.
The song begins in Ab and modulates to B for the final chorus at 3:23.