Update: The track is called “PARTYNAUSEOUS” and will be released on September 6th.

Their collaboration with Eminem may not be happening, but Lady Gaga and Kendrick Lamar will appear together on a track off Lamar’s major label debut good kid, m.A.A.d city, as Lady Gaga revealed on Twitter:

I am so excited to announce that a record I’ve been working on has now become a collaboration with @kendricklamar for HIS ALBUM.

good kid, m.A.A.d city is scheduled for October 2nd via Aftermath Entertainment/Interscope Records.