He says the eclectic guest list will “push the genre.”

Post Malone’s debut album Stoney is still going strong nearly a year after its release, recently peaking at No. 4 on the Billboard 200. His sophomore effort Beerbongs & Bentleys looks poised for even more success based on its chart-topping first single “rockstar” featuring 21 Savage. The project appears to be nearing completion; in a new interview with The H3 Podcast, he revealed that he is finishing it up this week, and it’s set to drop sometime in December.

Post recently told Rolling Stone that Beerbongs & Bentleys will feature Nicki Minaj, Ty Dolla $ign, John Mayer, and metal legend Tommy Lee.

He went on to elaborate that these collaborations will “push the genre.” It’s an idea that meshes with Post’s famously eclectic taste in music, which ranges from country legend Hank Williams and Harlem rapper A$AP Ferg to metal band Biohazard and indie mainstay Father John Misty.

Stoney recently landed its sixth platinum single with “I Fall Apart” after a recent surge in popularity, while “rockstar” just earned the same certification earlier this week.

Read the full interview at Rolling Stone and check out all the lyrics to Post Malone’s “rockstar” featuring 21 Savage on Genius now.