Daft Punk teamed with Julian Casablancas on the Random Access Memories single “Instant Crush,” but according to Casablancas, that’s not the only song they recorded together. During a Revolt TV segment with his band the Voidz, Casablancas mentioned that he recently saw Daft Punk’s Thomas Bangalter and urged him to release the other song they did, one that’s way weirder than “Instant Crush.” His description of the track:

It’s cool, weird. It’s definitely not one tenth as populicious as “Instant Crush,” but it’s just really weird. It’s like a song that just goes up. It’s like four half-steps up, moving as that on cycle, on repeat. And it’s super bizarre. And it sounds like jazz modern weird. It’s weirder than any song on the record that I know of.

It’s unclear whether he means this unheard collaboration is weirder than anything on Random Access Memories (which would make it kind of weird) or weirder than anything on the Voidz’ own Tyranny (which would make it really, really weird). The band also shared some info about their video for the 11-minute epic “Human Sadness,” which will use a live take of the song rather than the studio recording. Watch the full segment below.

Tyranny is out now on Cult. Read our interview with Casablancas.