Diva of divas, «Queen of Power Ballads» Celine Dion celebrity heights the Quebecois Canadian singer and is renowned for her powerful, technically skilled vocals. She remains the best-selling Canadian recording artist and one of the best-selling artists of all time with record sales of over 200 million worldwide. She first gained international recognition by winning both the 1982 Yamaha World Popular Song Festival and the 1988 Eurovision Song Contest, where she represented Switzerland. After learning to speak English, she signed on to Epic Records in the United States. In 1990, Dion released her debut English-language album, Unison, establishing herself as a viable pop artist in North America and other English-speaking areas of the world. During the 1990s, she achieved worldwide fame after releasing several best-selling English-language albums, such as Falling into You (1996) and Let's Talk About Love (1997), which were both certified diamond in the US. She also scored a series of international number-one hits, including «The Power of Love», «Think Twice», «Because You Loved Me», «It's All Coming Back to Me Now», «My Heart Will Go On», and «I'm Your Angel». Dion continued releasing French albums between each English record; D'eux (1995) became the best-selling French-language album of all time, while S'il suffisait d'aimer (1998), Sans attendre (2012), and Encore un soir (2016), were all certified diamond in France. During the 2000s, she built her reputation as a highly successful live performer with A New Day… on the Las Vegas Strip (2003–07), which remains the highest-grossing concert residency of all time, as well as the Taking Chances World Tour (2008–09), one of the highest-grossing concert tours of all time. Dion's music has been influenced by genres ranging from rock and R&B to gospel and classical. Celine Dion is regarded as one of pop music's most influential vocalists. She has won five Grammy Awards, including Album of the Year and Record of the Year. Billboard named her the «Queen of Adult Contemporary» for having the most number-one songs on the radio format for a female artist. She possesses a three-octave vocal range, spanning from B2 to E♭6. She once claimed to be a mezzo-soprano. She is often praised for her technical virtuosity. On a cultural level, Dion is credited for introducing francophone music to many non-francophone countries around the globe.