The pupil has quickly become the teacher. Just one week after Justin Bieber's mentor, Usher, topped the charts, the Canadian teen will climb back into the #1 spot next week with his second album, My World 2.0. After falling back a spot to make room for the chart debut of Usher's Raymond v Raymond, Bieber reclaimed the pole position with 102,000 in sales, despite a 65 percent drop-off in business, according to figures provided by Nielsen SoundScan. That gives the "Baby" singer a three-week total of more than 675,000.

And while Usher's sales slipped 72 percent in week two, his 92,000 was enough to keep the self-titled debut solo album from former Guns 'N Roses guitarist Slash down at #3 on sales of 60,000. The only other newcomer in the top 10 is the live CD/DVD from Madonna, Sticky & Sweet Tour, which moved 28,000 units.

The rest of the top 10 is largely unchanged, with this year's top-selling album, Lady Antebellum's Need You Now, at #4 (57,000), Now 33 (#5, 53,000), Monica's Still Standing (#6, 38,000), Lady Gaga's The Fame (#7, 32,000), Bieber's My World (#8, 30,000) and Erykah Badu's New Amerykah Part Two: Return of the Ankh (#9, 30,000).

Just outside the top 10, Jakob Dylan's second solo album, Women and Country, has a soft landing at #12 (26,000), soul belter Sharon Jones and the Dap-Kings hit #15 in the first week for I Learned the Hard Way (23,000), and Sigur Ros singer/guitarist Jonsi has a solid debut at #23 with the solo album Go (15,000).

Thanks to the hype surrounding the video for their existential world-of-wonder rhyme "Miracles", greasepaint rappers Insane Clown Posse storm back up the charts to #55 with Bang! Pow! Boom! (8,000).

Much further down the list, the collaboration between former Talking Heads leader David Byrne and DJ Fatboy Slim, the Imelda Marcos concept album Here Lies Love, debuts at #94 (5,000), while E-40's Revenue Retrievin' albums both take a solid hit, with Night Shift dropping 51 spots to #100 (5,000) and Day Shift slipping 61 to #108 (5,000).

And while Adam Lambert's debut, For Your Entertainment, holds relatively steady at #76 (6,000) — with a likely bump next week, following the "American Idol" season 8 runner-up's mentoring gig on the show this week — the self-titled bow from the man that beat him, Kris Allen, falls off the charts for the first time since its release in November. At less than 300,000 copies, Kris Allen is officially the lowest-selling debut album from an "Idol" winner in the show's history.

Next week will bring chart bows from MTV Musical March Madness winners Coheed and Cambria and MGMT, whose Congratulations has met with lukewarm critical response so far.