Hip-hop supergroup Slaughterhouse had a simple message
 to their fans: Go out and buy our album for the sake of hip-hop. And they did, helping Eminem's labelmates land at #2 on next week's Billboard 200 chart thanks to sales of nearly 52,000 copies of Welcome To: Our House, according to figures provided by Nielsen SoundScan.

They were blocked from the top spot, though, by Christian rocker/rapper TobyMac, who scored the first #1 debut for a Christian act since 1997 when Eye On It sold just under 69,000. The other new entry in the top 10 came from veteran singer Alanis Morissette, whose Havoc and Bright Lights
 bowed at #5 on sales of 33,000.

The rest of the top 10: last week's #1, Trey Songz's Chapter V (#3, 41,000), NOW 43 (#4, 41,000), Maroon 5, Overexposed (#6, 31,000), VMA performer 2 ChainzBased on a T.R.U. Story (#7, 29,000), Carrie Underwood Blown Away (#8, 28,000), Fun. Some Nights (#9, 25,000) and, after its first-ever week outside the top 10 Adele 21 (#10, 23,000).

According to Billboard, 21's 79 nonconsecutive weeks in the top 10 is the third-longest run of its kind since 1963, bested only by Bruce Springsteen's Born in the U.S.A. (84 weeks) and the soundtrack to "The Sound of Music" (109).

Hip-hop matchmaker DJ Khaled's Kiss the Ring took a tumble from its #4 throne, as second week sales slipped by 64 percent to 15,000 and it slid 13 spots to #17.

2012 MTV VMA performer Taylor Swift tops the iTunes singles chart with her runaway hit, "We Are Never Ever Getting Back Together,"
 besting Maroon 5's "One More Night", Fun.'s "Some Nights," Flo Rida's "Whistle" and Owl City and Carly Rae Jepsen's "Good Time." Rounding out the top 10: Justin Bieber, "As Long As You Love Me," Phillip Phillips, "Home," Neon Trees, "Everybody Talks," Cher Lloyd, "Want U Back" and Jepsen's "Call Me Maybe."

TobyMac also ruled the iTunes album tally, beating out Slaughterhouse, Maroon 5, Underwood, Fun., the self-titled debut from the Lumineers, Morissette, NOW 43, Songz and My Head is an Animal by Of Monsters and Men.

Next week's charts will include new albums from Matchbox Twenty, VMA Best Rock Video nominees Imagine Dragons
, Cat Power, Animal Collective and Two Door Cinema Club.