Mariah Carey made US chart history.
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 . The album became the best-selling album in the US and the second best-seller worldwide in 2005 and produced `` We Belong Together , '' which became her most successful single of the 2000s , and was later named `` Song of the Decade '' by Billboard .