Ariana Grande And Nicki Minaj Help Jessie J To #1 With 'Bang Bang'

Also, welcome to the big time, Shawn Mendes.

Now that's a "Bang Bang!" Thanks to some help from Ariana Grande and Nicki Minaj, Jessie J. will score the second-biggest debut of the year on the Billboard Digital Songs chart with her hand-clapping anthem to shaking what your momma gave you. The late entry into the song of the summer race sold 230,000 copies to easily top the Digital chart, falling short of the smash debut from Grande's "Problem," which moved 438,000 back in May.

Related: Check Out Jessi, Nicki And Ariana's Killer Selfie

Eyes Trained On #1

The big debut for Jessie was enough to hold off the hard-charging "All About That Bass" from Meghan Trainor, which shot up four spots to #2 on sales of 169,000 as sales bloomed by 63 precent. Also having a good week was "Maps," the latest from Maroon 5, which moved up four to #3 (139,000). Further down the line, Iggy Azalea's new single with Rita Ora, "Black Widow," moved up from #15 to #8 (100,000), while Sia's "Chandelier" also rose, from #14 to #9 (97,000) and Maroon 5 scored a double with the #10 debut of "It Was Always You" (95,000).

Rocketing To The Top

The "Guardians of the Galaxy" gang didn't just top the box office, they also crashed the iTunes album chart, with the oldies-heavy The Awesome Mix Vol. 1 soundtrack to the latest Marvel blockbuster taking the #1 spot, followed by pre-orders for Maroon 5's upcoming V album and the debut EP from Shawn Mendes.

Speaking of oldies, one of rock's wiliest veteran bands, Tom Petty and the Heartbreakers, will score the first #1 debut of their nearly 40-year career on the Billboard 200 album chart with Hypnotic Eye. According to figures provided by Nielsen SoundScan, the album moved 131,000 copies, easily besting the #2 open from another rock icon, Eric Clapton, whose tribute disc The Breeze: An Appreciation of JJ Cale, debuted at #2 (61,000).

Awesome Mix opened at #3 on the Billboard chart (60,000), while 5 Seconds of Summer's self-titled debut fell from #1 to #4 as sales dipped 79 percent to 54,000 and Mendes hit #5 on the Billboard tally (48,000).