Mariah Carey made US chart history with Boyz II Men in their song "One Sweet Day."
Mariah Carey . 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 .