Twenty years ago this week, the #1 song on the Billboard Hot 100 was a fresh-faced Mariah Carey singing Emotions. It was not Carey's first of the year. In fact, it was her third #1. What is remarkable is that Carey had released her first album the year before, and had scored two #1's in 1990. This song, the first off her second album, made it five in a row for the talented singer. But 20 years ago this week, Mariah Carey was on top of the Billboard singles chart with Emotions.