Justin Bieber was in the recording studio Wednesday and posted pictures online revealing exactly who he was working with on new music.

The Heartbreaker singer posted on Instagram a picture of him in studio with Pharrell Williams and Tyler the Creator. That same day he re-tweeted a similar photo Tyler posted online, showing Bieber and Williams making music.

Doubling as both a producer and musician, Williams most recently collaborated with Robin Thicke on Blurred Lines and Daft Punk on Get Lucky. He worked with Big Sean on Hall of Fame, Jay Z on Magna Carta...Holy Grail and even with Tyler on his 2013 album Wolf.

Justin Bieber & Miley Cyrus 'Twerk' Song AUDIO, Listen

Not much is known about Bieber's upcoming album except its lead single Heartbreaker, which Bieber revealed via Instagram on June 3. He uploaded an image of the song's cover art and also possible lyrics of the track: "don't tell me your my...#heartbreaker."

Bieber on Aug. 3 uploaded an Instagram photo of him in the studio with Big Sean. Details of the music were not revealed but the two do have musical chemistry, proven in their collaboration for 2012's As Long as You Love Me. Bieber on Aug. 16 was in the recording studio with Future, also evident through an Instagram photo the 19-year-old uploaded.

Justin Bieber Studio Collaborations

Bieber released a new song on Aug. 16 titled Slave to the Rhythm featuring vocals by the King of Pop Michael Jackson. On Aug. 28, an audio leaked online of Bieber's duet with Miley Cyrus, titled Twerk.

A release date has not been set for Bieber's album but his manager, Scooter Braun, told MTV News in April that the singer has been working on the record since 2012.

"I don't ever disclose what our plans are," Braun said, "but I will say this: He's been writing one to two songs a day for the entire [Believe] tour, and he actually labels them by the city he writes them in. We started calling it his 'music journal,' and we're talking about what should come next musically."

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Justin Bieber, Pharrell williams, Tyler The Creator