B.o.B’s "NOTHIN’" PROVES SOMETHING

That’s the number of people who have downloaded the Grand Hustle/Atlantic rapper’s smash single, “Nothin’ on You,” featuring Bruno Mars.

Enough of them bought the up-and-coming Atlanta hip-hop star’s debut album, Adventures of Bobby Ray, to make it #1 on this week’s HITS sales chart with 84k.

Capitol Nashville/EMI’s double-platinum Lady Antebellum release, Need You Now, is steady at #2, with 76k.

Veteran Jive/RED Welsh hardcore metal band Bullet for My Valentine is the week’s other top bow, entering the chart at #3, with 72k, for its third album, Fever.

Island/IDJ’s Justin Bieber holds down the #4 spot with his latest album, My World 2.0, and #10 with his debut, while Columbia’s AC/DC Iron Man 2 soundtrack rounds out the Top 5.

Island/IDJ’s Melissa Etheridge gives L.A. Reid’s label three in the Top 10 with her latest, Fearless Love, which bows at #6, followed by LaFace/JLG’s Usher, at #7.

iCarly star Miranda Cosgrove’s Columbia debut, Sparks Fly, is the other newcomer to the Top 10, entering at #8, followed by Capitol/EMI’s Now 33 at #9.

Mercury/IDJ’s Hole, Courtney Love’s reconstituted band, debuts at #16, followed by Zoe Records’ Mary Chapin Carpenter (#26), Sony Music Latin’s Daddy Yankee (#33), Eleven Seven’s Drowning Pool (#34) and, fresh off their American Idol appearance last week, Interscope’s Sons of Sylvia (#37).

Columbia’s Susan Boyle (#44) and Broken Bow’s Jason Aldean (#50) both re-enter.

Reprise crooner Michael Buble’s Crazy Love is the week’s biggest gainer, moving #35-22, +26%. Epic’s Sade (#23, +7%), Interscope’s Lady Gaga (#21, +6%) and Roadrunner’s Nickelback (#45-36, +4%) also experienced sales upticks.

Hitting stores today are Universal Republic’s Godsmack, Asylum’s Bone Thugs N Harmony, Atlantic’s Toni Braxton, Columbia’s Court Yard Hounds, Hear Music’s Carole King/James Taylor, WB’s Deftones, Slip-N-Slide/EMM’s Trina, Atlantic’s Zac Brown Band live and Vagrant’s The Hold Steady. Look for sales to jump next week with Mother’s Day this Sunday.