Mac Miller stays busy. He's got a bushel of mixtapes under his belt, he dropped his GO:OD AM album—and first on a major label—in September, and he's got pseudonyms on pseudonyms. One of 'em, Larry Fisherman, dropped a song on Sunday. It's a Billy Joel cover.

We wouldn't blame you for having no idea that this version of "Vienna" comes from Mac Miller. It's got a modulated vocal that sounds like a '60s soul singer underwater. The song comes from Joel's 1977 breakthrough album The Stranger.

Of the rapper's side projects, Rolling Stone writes:

"Miller previously released the 2013 instrumental mixtape Run-On Sentences Vol. 1 under his Fisherman production pseudonym alongside a mixtape under the name Delusional Thomas. The year before, he released a set of lounge-jazz tracks as Larry Lovestein and the Velvet Revival."

We'll be watching to see what other tricks Mac's got in store in 2016.