Mariah Carey was named the best-selling female pop artist of the millennium at the 2000 World Music Awards. She has the most number-one singles for a solo artist in the United States (eighteen; second artist overall behind The Beatles), where, according to the Recording Industry Association of America, she is one of the best-selling female artists and sixteenth overall recording artist. In addition to her commercial accomplishments, Carey has earned five Grammy Awards, and is well-known for her vocal range, power, melismatic style, and use of the whistle register. She is ranked as the best-selling female artist of the U.S. Nielsen Soundscan era (third best-selling artist overall), with sales of over 62.5 million albums in the U.S. and has sold over 200 million albums worldwide.. Here are 18 of her best ballads: