Claim: Boyz II Men and Mariah Carey released a song.
Evidence: Carey and Boyz II Men spent a record sixteen weeks atop the Billboard Hot 100 in 1995 -- 96 with `` One Sweet Day , '' which remains the longest-running number-one song in US chart history.
`` One Sweet Day '' is a song by American singer Mariah Carey and R&B group Boyz II Men.