Forbes contributors publish independent expert analyses and insights. With her five-octave range, Mariah Carey has one of the most powerful and impressive voices of all time. She is a top '90s female ...

Lately the comfort of nostalgia is at an all-time high, but living in the past isn't productive. It’s learning from it that matters.

Remember when you’d flip through radio stations and hear those unforgettable voices that defined the 90s? Those singers gave us songs we sang in our rooms, at school dances, and on long car rides.