McKagan first shared word that he was recording on his 51st birthday on February 5 with Stradlin and his longtime drummer Taz Bentley, tweeting "Spent the first part of my birthday with @tazbentley and Izzy...rocking!"

Now, McKagan shares more details in a new interview with Argentina's Vorterix. "[Izzy and I] recorded a song that day," says the bassist. "We were talking on the phone, and he said, 'Let's go record a song.' And we used Josh [Homme] from Queens of the Stone Age's studio; it was open.

"So we just went it - Izzy and I and Taz - and just had a blast. We recorded a song. I have it. It just got mixed. It's a super kick-ass song. And we just had fun, and we'll probably do it some more."