"Unstoppable," the latest release from country sensations Rascal Flatts [ tickets ], makes its debut atop the US album chart this week, earning the trio their fourth No. 1 set.

With first-week sales of 351,000 copies, "Unstoppable" stayed well ahead of the competition to claim the top spot on The Billboard 200, easily outdistancing the " Hannah Montana [ tickets ]: The Movie" soundtrack, which rises from No 5 to No. 2 on sales of 196,000 copies, according to Billboard. (Billboard bases its flagship chart on Nielsen SoundScan retail data.)

Two more new entries follow, with Jadakiss [ tickets ]' "Last Kiss" debuting at No. 3 with sales of 135,000 copies, and Jason Aldean [ tickets ]'s "Wide Open" logging on at No. 4 with sales of 109,000 copies.

Rounding out the Top 10 are the "Now 30" hits compilation at No. 5 with 99,000 copies sold; Taylor Swift [ tickets ]'s "Fearless" at No. 6 with 82,000 copies; Keith Urban [ tickets ]'s "Defying Gravity" down from No. 1 to No. 7 with 72,000 copies; the "Twilight" soundtrack at No. 8 with 68,000 copies; Prince [ tickets ]'s triple-disc "Lotus Flow3r/MPLSound/Elix3r" at No. 9 with 66,000 copies; and Lady GaGa's "The Fame" at No. 10 with 56,000 copies.