Justin Bieber's back in the studio, and he's got the Instagram video to prove it.

In the new clip, Bieber is seen dancing to a song that sure sounds like it was produced by DJ Mustard — at one point, you can hear his signature "Mustard on the beat ho!" drop, which also shows up on tracks like Tyga's "Rack City" and 2 Chainz's "I'm Different" — and, though it's sorta difficult to see (this studio apparently has more black lights than a '70s dorm room), he's definitely feeling it.

A rep for Mustard could not be reached for comment by MTV News at press time. But to expound on his feelings about the new track, Bieber also attached a note to the video: "Girls be in the the club like OMG this is my song!!!!! LOL."

LOL, indeed. In another Instavid, Bieber shouts out producer Soundz, and tells him to get to Toronto, ASAP, since "We're making bangers, bro!"

There's still no word about when fans will get to hear said bangers, though in recent weeks, Bieber has been spending plenty of time in the studio — just this past weekend, he posted a video of a new song called "Life is Worth Living," which many speculated was about his on again, off again, back-on-again relationship with Selena Gomez.

Last month, Bieber unveiled a new song called which took aim at the critics that have hounded him since his DUI arrest in January.

When Freddie Gibbs first announced his split from Jeezy's CTE label, he said it wasn't personal. And maybe it wasn't then ... but things are clearly getting personal now.

Gibbs has most recently declared he won't stop throwing shots at his former comrade until Jeezy responds to the disses.

"I'mma stay on his punk ass till he say something about it. I'mma keep drilling his punk ass into the ground," Freddie told Grantland.com this week.

The Gary, Indiana MC recently linked with producer Madlib, and the duo dropped their collaborative Piñata LP. The soulful-yet-gangsta album is filled with a number of highlights, including the jaw-dropping where Gibbs takes aim at Jeezy.

"I thought the world was at my feet when I linked up with Snow/ But I refused to be his flunky, so we don't kick it no mo'," he spits over the slow-rolling track. "No nuts, got the whole team lookin' weak/ Guess why they ran up on you at the BET?" he continues, referencing Jeezy's altercation with Rick Ross at the 2012 BET Hip Hop Awards in Atlanta.

Gibbs signed to Jeezy's CTE in 2011, but split from the label a year later. "I started seein' the fake and the empty promises and all of that stuff and I just didn't wanna be around that no more," he told MTV News last year. "It's tough meetin' your heroes sometimes and kickin' [it] with them because when they take that cape off, boy oh boy, under that cape, sometimes it's some scary lil' boy hidin' under ...

The first half of Lars Von Trier's "Nymphomaniac" hits theaters this week, and for an art house film set for limited release, there's been a lot of conversation about the two-parter. Some of that had to do with the odd antics of star Shia LaBeouf, but even before he wasn't famous anymore, the movie's character posters had everyone talking.

You remember posters, right? The ones with the entire cast giving their best o-face? It was certainly a new approach to the character poster, and the one-sheets spread like a wildfire.

I couldn't help but bring up the posters during my conversations with the cast of "Nymphomaniac" at the press day, and the stories behind the photos were interesting to say the least.

The tales from Christian Slater, Charlotte Gainsbourg, Stellan Skarsgård and Uma Thurman about the making of the posters were all different, but it's pretty clear that it was an uncomfortable day on set.

"Nymphomaniac: Vol. 1" opens in theaters on March 21. Both installments are available digitally now.

"American Idol" 's top 10 tackled songs from the top 10 on Wednesday, trying their hand at Billboard's biggest hits from 2011 to the present.

Contestants took on songs from One Direction, Zedd and Avicii, and the performances ranged from strong (Malaya Watson) to extremely shaky (MK Nobilette).

Here's a look at how the night unfolded.

Malaya, Caleb Lead The Pack

The last time Malaya Watson took on a Bruno Mars song, she landed in the bottom three. But Watson did Mars again on Wednesday and was on point, delivering a solid, heartfelt and emotional version of "When I Was Your Man."

The judges were preoccupied with the song's gender specificity — Jennifer Lopez admitted, "I was ready to kind of hate on you" for the song choice — but Watson's sincerity shone through. "Well done for leaving it the way it was," Keith Urban told her.

Caleb Johnson also stood out, taking on a powerhouse female singer — this time, Lady Gaga — for the second week in a row. Even though the band didn't match his fire, which is a problem with nearly every performance this year, his version of Gaga's "The Edge of Glory" was a winner, earning Johnson "an A for originality" from sourpuss judge Harry Connick Jr. Lopez wasn't as impressed, however, knocking Johnson for lacking feeling and "showing off vocally." On a singing competition, can you imagine that?

One Direction, Hunter Hayes Get Covered

One Direction got the "American Idol" treatment for the first time Wednesday when Alex Preston tried "Story of My Life" on for size. It was a good fit, ...