While preliminary sales estimates had the Jonas BrothersJonas Brothers selling as many as 725,000 copies of their latest LP, A Little Bit Longer, during its first week on record store shelves, it turns out those projections — which were based on first-day scans — were slightly generous. But the good news (at least for the Jonases) is that, as expected, they've still managed to open on top, scoring them the first #1 debut of their young career.

According to Nielsen SoundScan, A Little Bit Longer sold just over 525,000 copies during week one, making it one of the year's best-selling debuts. On top of that, the Jonas Brothers' 2007 self-titled effort returns to the Top 10 on next week's Billboard albums sales chart, at #10, after selling another 31,000 units, marking the first time a group has done so since 'NSYNC back in late 1998; that's when that act's 1998 self-titled effort claimed the #2 spot with 535,700 sold, and 1998's Home for Christmas rounded out the Top 10 with 265,600 copies scanned.

But there's more! Not only can the Jonases — who will perform at the VMAs on September 7 — claim the nation's best-selling and 10th best-selling albums, but the "Camp Rock" soundtrack, which features three tracks from the boys, holds the #8 position, selling around 50,000 copies — meaning there are three albums featuring their songs in next week's Top 10.

And there's even more! Thanks to A Little Bit Longer, the Jonas Brothers have eclipsed the first-week sales generated by fellow Disney Channel juggernaut Miley CyrusMiley Cyrus, who stars in the "Hannah Montana" series and films. Miley's Breakout sold nearly 371,400 copies to debut at #1, or close to 150,000 fewer copies than the Jonases. Breakout sold another 84,700 copies last week, and falls two spots on the chart to #4.

A Little Bit Longer's ascension to the chart's peak position was a smooth one, seeing as the Jonas Brothers faced little competition in their quest for #1. Following them at #2, with 110,000 sold, it's last week's #1, the "Mamma Mia!" soundtrack, with Kid RockKid Rock's Rock N Roll Jesus at #3, with 101,000 scans. The Jonas Brothers' new one was one of 11 new releases to impact next week's chart, but the only one to bow in the top 10. Daddy YankeeDaddy Yankee's Talento de Barrio: El Soundtrack was the week's second-highest debut, entering at #13 with just 25,500 sold.

Also debuting on next week's chart is rapper Yung BergYung Berg's Look What You Made Me, which claims the #20 spot with 19,000 scans; the New Kids on the BlockNew Kids on the Block's Greatest Hits collection, which bows at #22 with 18,700 sold; the "Beer for My Horses" soundtrack, which sold 6,600 copies to open at #74; Extreme's Saudades de Rock, which follows at #78 with 6,500 sold; and Janelle MonáeJanelle Monáe's Metropolis: The Chase Suite, which, with sales reported at 5,200, enters at #115.

The rest of the top 10's crammed with familiar faces. Sugarland's Love on the Inside drops two spots to #5, with 66,700 sold, with Lil WayneLil Wayne's Tha Carter III trailing at #6, on the strength of 61,700 scans. ColdplayColdplay's Viva la Vida or Death and All His Friends closes out the week with 50,000 sold, which keeps it in the #8 slot, and RihannaRihanna's Good Girl Gone Bad follows at #9, with 42,300 copies snatched up.