Keith Urban has his very first No. 1 on the Billboard 200. The country superstar's sixth studio CD, 'Defying Gravity,' makes its debut on the top of the all-genre album chart, selling more than 171, 000 copies in its first week.

"It a very up-record. It's about love, optimism and rising above," Keith tells The Boot of the album's overall theme. "I tend to gravitate towards hope. Even in the down periods, I always gravitate towards the little bit of light that might be there."

Keith is followed on the Billboard 200 by Prince, who comes in at No. 2 this week with his new album, 'LotusFlow3r.' Rounding out the Top 5 are the latest album from jazz songbird Diana Krall, followed by the 'Now 30' compilation and 'Hannah Montana: The Movie' soundtrack.