"We'd been sending demos back and forth since, like, 2013, '14, something like that," Matt Cameron said on Dean Delray's "Let There Be Talk" podcast. The recordings combine vocals from demos with live rehearsal material captured before the 2017 tour. I think that that's pretty much all there is with vocals," Cameron added in the interview. Matt Cameron told the podcast they are taking it one step at a time after years of delays. Matt Cameron left Pearl Jam in July 2025 after almost three decades to focus on finishing this project.