The Billboard 200:

-- Amos Lee, Iron and Wine, Wisin & Yandel: Three acts that debuted in the top 10 last week all tumble by at least 25 positions this week -- Amos Lee's "Mission Bell" falls 1-26, Iron and Wine's "Kiss Each Other Clean" descends 2-35 and Wisin & Yandel's "Los Vaqueros: El Regreso" drops 8-42. With January and February sales especially soft this year, there have been a lot of weird second-week drops that looks frightening on paper, but aren't unexpected.

All three of these acts performed quite well in their first week and since the overall market is soft, they were able to obtain an almost artificially high debut. (That is -- there isn't much competition for the top 10, so you can sell decently in your first week and engineer a high entry. Had these albums come out in the thick of the Christmas shopping season -- when there is greater competition -- they likely wouldn't have even made the top 10.)

Because none of the albums are able to sustain momentum in their second week -- again, not unusual for niche acts without widespread mainstream appeal -- and because the market is so soft, seeing them drop like anvils off a cliff isn't shocking.

In addition, the margin between Nos. 10 and 40 is pretty small - only 15,000 separates them. So there isn't much wiggle room when it comes to second-week erosion. Had "Los Vaqueros" sold just 3,000 more this week -- bringing it to 14,000 instead of 11,000 -- it would have ranked at No. 31, not No. 42.

-- Bob Marley: The reggae icon's new "Live Forever" album enters at No. 14 (23,000), securing him his second-highest charting set ever. Only his Rastaman Vibration" went higher -- peaking at No. 8 in 1976. Meanwhile, his steady-selling greatest hits album "Legend" rises with the chart's largest percentage gain -- up 96% (jumping 145-66).

-- The Black Eyed Peas: We gotta feeling that the Peas' Super Bowl halftime performance on Feb. 6 (no matter how widely panned) engineers a 35% gain for their "The Beginning" album (moving 26-20). It's also up 44% in downloads. The title could certainly see another jump next week, after a full week's worth of Bowl impact is felt. (The chart data reflected in this week's numbers was for the week ending Feb. 6, so only sales that occurred either during the show or right after are reflected on this week's tallies.)

-- My Chemical Romance: Not to beat up on them, but the rock band's "Danger Days: the True Lives of the Fabulous Killjoys" continues its rather swift descent down the chart, as it falls 122-177 in its 11th chart week (3,000; down 21%). So far, the set has sold 222,000 copies in the U.S. Comparably, its last studio set, "The Black Parade," moved 797,000 in its first 11 weeks of release.

-- Ozzy Osbourne: Thanks to deep discounting at Walmart -- where the chain is clearing out many titles for only $5 -- Osbourne comes back onto the list at No. 193 with his classic solo debut set "Blizzard of Ozz" (up 33%). The album peaked at No. 21 in 1981 and has been off the chart since 1983.

The Billboard Hot 100:

-- Wiz Khalifa: As perhaps a measure of consolation for forlorn Pittsburgh Steelers fans, the Steel City anthem "Black and Yellow" ascends to the top of the Billboard Hot 100, jumping 4-1. Though the Steelers lost Super Bowl XLV Sunday (Feb. 6) to the Green Bay Packers, the rapper's debut Hot 100 entry registered gains in sales and airplay in the week leading up to the NFL title tilt. "Black" holds at No. 2 on Hot Digital Songs (198,000 downloads sold, up 6%, according to Nielsen SoundScan) and pushes 10-7 on Hot 100 Airplay (81 million audience impressions, up 11%, per Nielsen BDS).

The track, which displaces Bruno Mars' "Grenade" (1-2) after four nonconsecutive weeks atop the Hot 100, also grants Roadrunner Records its second trip to the summit. The label first led with Nickelback's "How You Remind Me" for four weeks in 2001-02.

-- P!nk:
After zooming 11-2 last week with the Hot 100's Greatest Gainer/Digital award for a third consecutive week (the longest streak since Leona Lewis' "Bleeding Love" in 2008) and looking like a potential No. 1 this week, "F**kin' Perfect" dips 2-4. The song descends 1-3 on Hot Digital Songs (187,000, down 22%), although it continues its vault up Hot 100 Airplay, bounding 22-16 in its fifth week on the list (56 million, up 26%).

-- Dr. Dre: The venerable rapper lands his highest Hot 100 debut, as "I Need a Doctor," featuring Eminem and Skylar Grey, blasts in at No. 5. The second single from the rapper's forthcoming album "Detox" begins atop Hot Digital Songs (226,000 downloads). The set's first preview track, "Kush," reached No. 34 on the Hot 100 in December. (Did you know that Grey, also featured on Diddy Dirty Money's "Coming Home" at No. 14, previously recorded as Holly Brook? Billed as such, she reached No. 4 on the Hot 100 as a featured artist on Fort Minor's rap/rock song "Where'd You Go" in 2006).

-- Chris Brown: Instantly outperforming his poppier "Yeah 3X" (16-17), "Look at Me Now," featuring Lil Wayne and Busta Rhymes, opens at No. 11 on the Hot 100 and No. 4 on Hot Digital Songs (158,000), complementing a 30-23 surge (11 million audience impressions, up 42%, per Nielsen BDS) on Hot R&B/Hip-Hop Songs.

-- Cee Lo Green: Former top 10 "F**k You (Forget You)" claims the Hot 100's Greatest Gainer/Airplay award, jumping 19-16. The song, which, as previously reported, reaches a new peak on the Mainstream Top 40 chart five months after its release, also rockets to a new highpoint (42-23) on Hot 100 Airplay (44 million, up 42%). Green is expected to perform the song with Gwyneth Paltrow Sunday (Feb. 13) at the 53rd Grammy Awards. Among its four nominations, "F**k You" is up for coveted record and song of the year honors.

-- Rihanna: Likely aided by attention for its racy video "S&M" soars 66-31 as the Hot 100's Greatest Gainer/Digital winner, storming 67-20 on Hot Digital Songs (75,000, up 147%). The song concurrently starts as the highest new entry on Hot 100 Airplay at No. 57 (22 million, up 83%).