Madlib loves throwing out random unreleased tracks during his DJ sets, but during Saturday's show in San Diego, he offered up a particularly tantalizing preview. Without warning, the legendary producer dropped a previously unheard collaboration between him, Mac Miller, and Thundercat.

Hopefully fans will get to hear whatever it was Madlib cooked up with Mac in the near future, but for now this preview is all we've got. During the set, he also dropped an unreleased track from Freddie Gibbs, which will presumably end up on their new collaborative record Bandana.

Not too long ago, Thelonious Martin indicated that Mac and Madlib had recorded a full record together. "When [Miller and I were] working on 'Guidelines,' he was always excited about all these other songs. He had this Madlib album, called Maclib," the producer told DJBooth. "So I'm opening for Madlib, and about 15, 20 minutes left in my set, Madlib pulls up. Pete Rock walks up as well. So I'm trying to focus and DJ, and Madlib gets on and 15 minutes into his set he just randomly plays a Mac Miller joint. And I turn to him, I'm like, 'There’s more of these, right?' He said, 'Oh, yeah, there's a whole album. Maclib.' What! What! He just kept moving on with his DJ set."

It's unclear if this unreleased collaboration is from Maclib or not, and Martin said he wasn't sure if the project will ever see the light of day.