Keith Urban debuts on top of the Billboard album chart with Defying Gravity, which sold over 171-thousand copies. According to Billboard, it marks Urban’s first number one album. Meanwhile, Prince’s Target-exclusive LotusFlow3r album arrives at number two, selling 168-thousand copies and giving the singer his 14th top ten set. Diana Krall’s Quiet Nights enters the chart at number three, marking a career high for the jazz pianist and singer. Last week’s number one, the NOW 30 compilation, slips to number four while the Hannah Montana: The Movie soundtrack drops three spots to number five. UGK nabs its second top ten album as UGK 4 Life bows at number six. It’s the first release from the hip-hop duo since one-half of the pair, Pimp C, died in late 2007. Elsewhere on the chart, the Twilight soundtrack falls four notches to seven, Flo Rida debuts at number eight with R.O.O.T.S., Lady GaGa’s The Fame slides two slots to number nine and Taylor Swift’s Fearless climbs two spots to number ten.