Madonna is the most successful female recording artist of all time as reported by every official agency. Madonna has a versatile voice where she can convincingly go from pop, to rock, to R&B, to electronica to dance. David Foster, uber producer, says she is one of the most underrated vocalists. Madonna work in Evita is testament to her vocal skills. Though not a big voiced diva, her medium voiced range is widely credited with her massive appeal. Natasha Beddingfield once said she greatly admired Madonna's range and vocal ability after singing Ray of Light, saying "No one can sing that song and not have a great voice. Madonna proved she's got it." Smooth, sultry and rich, her voice takes on many characteristics depending on the song she is singing. She has an emotive, expressive vocal which is a lost art in todays world of glamorizing melisma. Most of the great singers weren't big voices ( Sinatra, Springsteen, Dylan, McCartney. Nicks, Ross) but they could move their audiences with their expressive vocals. This is what made Madonna #1.