Adam Lambert's Trespassing enters The Billboard 200 at #1, displacing Carrie Underwood's Blown Away. This marks the first time that artists who rose to fame on American Idol have had back-to-back #1 albums. Lambert was the runner-up on Season 8. Underwood was the winner on Season 4.

Lambert is the second Idol runner-up to land a #1 album, following Clay Aiken. One other Idol "loser" has topped the chart: Chris Daughtry, who finished fourth in Season 4. (more...)

Donna Summer was universally hailed as "the Queen of Disco," but the title didn't really do her justice. Summer had a big, powerful voice that would have served her well in any era. Such Summer hits as "Heaven Knows" and "On The Radio" were really just great pop records with a dance beat. But because of her strong association with disco, when the disco bubble burst in the early 1980s, Summer's career also suffered.

But while she was hot, she was on fire. Summer had eight consecutive top 10 hits, from "Last Dance" in July 1978 to "On The Radio" in February 1980. All eight were certified gold by the Recording Industry Assn. of America. "Last Dance," which Summer sang in the 1978 movie Thank God It's Friday, won an Oscar as Best Song.

Adele's 21 tops the 9 million mark in U.S. sales this week. It's the first album to hit the 9 million plateau since Usher's Confessions hit the mark the week ending July 24, 2005. Remarkably, 21 reached the 9 million plateau faster than Confessions did, even though overall sales were much more brisk in 2004-2005. 21 has been out for 64 weeks. Confessions took 70 weeks to reach the magic number.

21 is the 29th album to sell 9 million copies since 1991, when Nielsen SoundScan began tracking sales for Billboard. It's the 24th regular studio album to reach this level. Studio follow-ups to the first 23 have achieved varying degrees of success.

It's too early to know if Jermaine Paul, the newly-crowned winner of Season 2 of The Voice, is going to become a recording star, but the show has done wonders for the careers of all four of its judges, especially Adam Levine. "Payphone" by Maroon 5 featuring Wiz Khalifa holds at #3 for the third week in its third week on the Hot 100. Even "Moves Like Jagger," Maroon 5's 2011 smash with Christina Aguilera, didn't hold up this well in its early outings. The song debuted at #8, but then dropped to #23 in its second week and #62 in its third. (That was its low point; it reached #1 in its 10thweek and stayed there for four weeks.)

"Payphone" tops the 1 million mark in sales this week. It's Maroon 5's fastest climb to "gold" status. 2007's "Makes Me Wonder" took seven weeks to sell 1 million copies. "Jagger" took nine.