Week of March 6

As is often the case, a week light on debuts (this past week, with one new song) is followed by a week heavy on debuts. Seven songs enter the Top 40 -- the most in one week since Nov. 7 of last year. (Interestingly, two of the songs that entered that week, "The Best Thing About Me Is You" from Ricky Martin and Joss Stone and "Just the One (I've Been Looking For)" from Huey Lewis and the News, just dropped out this week.) The seven span a variety of genres, from the R&B of Cee-Lo Green and Marsha Ambrosius to the country of Thompson Square to the alternative rock of Florence + The Machine to the straight-up pop of Christina Perri, Chris Medina and Beady Eye.

While he ends his four-week No. 1 run with "Fool for You," now No. 5, Green looks to follow it up with the week's highest debut, "Bright Lights Bigger City" at No. 33. It's his third hit from the CD "The Lady Killer." Right above "Lights" is Green's Grammy duet partner, Gwyneth Paltrow, moving 38-32 with "Me and Tennessee" from the soundtrack of "Country Strong."

Speaking of country, debuting at No. 34 is the country crossover hit "Are You Gonna Kiss Me or Not?" It's the first chart hit for husband and wife Keifer and Shawna Thompson, known as Thompson Square. The duo has been the opening act for Jason Aldean, the artist who is earning his own chart success with his duet with Kelly Clarkson, "Don't You Wanna Stay?" (up 16-13 this week).

Thompson Square is one of six artists debuting for the first time in the Top 40 this week. Recent "American Idol" castoff Chris Medina enters at No. 36 with "What Are Words," singer-songwriter Christina Perri enters at No. 38 with "Jar of Hearts" and Grammy nominee Florence + The Machine debuts at No. 39 with "Hardest of Hearts."

Beady Eye, the group at No. 37 with "The Beat Goes On," is made up of several former members of the British rock group Oasis. And Marsha Ambrosius, originally from Liverpool, England, was half of the R&B duo Floetry. Her solo debut, "Hope She Cheats on You (With a Basketball Player)," enters at No. 40.