Flosstradamus brought in a lot of artists to collaborate on their new single. The trap duo enlisted FKi 1st and Hawaiian producer Graves to assist in the production of "Came Up." The track features Post Malone and Key! with the former taking a leading role on this one.

Post Malone handles the hook which is tailor made for his sing-song style. After tackling the first verse, he "White Iverson" creator hands things off to Key! for the Atlanta rapper to deliver his own verse. Post spoke about this unique collaboration in a press release for the single.

"I'm just happy to have been a part of this record," Post Malone said. "Key! has been my guy from day one and with Flosstradamus it's just a perfect fit."

Post Malone and Key! joined forces on this track following two big mixtape releases for both artists. Post Malone put out his long awaited debut August 26 back in May. The project was the first chance for fans to hear what he was capable of creating on a full-length effort. The 10-track tape featured guest appearances by artists like 2 Chainz, Jeremih, Lil Yachty and Jaden Smith.

Key! made his own mark this summer by putting out a mixtape titled Before I Scream. The Atlanta rhymer's latest effort featured 11 songs with some cover artwork inspired by the popular anime series Dragon Ball Z. Guests appearing on the project included Skepta, Lil Yachty, ManMan Savage, Rizzoo Rizoo and Childish Major.

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