Mariah Carey is an American singer-songwriter, record producer, and actress. She made her recording debut in 1990 under the guidance of Columbia Records executive Tommy Mottola, and became the first recording artist to have her first five singles top the U.S. Billboard Hot 100 chart. Following her marriage to Mottola in 1993, a series of hit records established her position as Columbia's highest-selling act. According to Billboard magazine, she was the most successful artist of the 1990s in the United States. 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.