Mariah Carey

Mariah Carey holds the record for the most #1 singles on the US Billboard Hot 100 by a solo artist with 19, a tally that outperforms #6 Beyoncé's 8 chart-toppers. Her 1994 single 'All I Want for Christmas Is You' has become the best-selling Christmas song in history, re-charting every December and grossing an estimated $60 million in royalties — 20% more than the runner-up holiday hit. With over 220 million records sold and a pioneering 5-octave vocal range, Carey defined the vocal gymnastics of modern pop.