In an August 2016 interview with Rolling Stone, Peter spoke about a track he wrote for The Monkees' 1996 album, Justus:
"Michael was becoming involved with [his future wife] Victoria [Kennedy] at the time. He played her the soundtrack to Head. She asked who was playing bass and he said, 'That's Peter.' Then she said, 'Who wrote that part?' And he went, 'Oh, that was Peter too.' Then he had the idea that the theme song to Friends sounded exactly like Headquarters. He just caught a charge and wanted to see it through, so he asked me and Micky to come jam with him. It was the first time we'd played together like that since 1969.
I played bass. Micky was on drums and Michael was on guitar. We sounded just the same. It was really amazing. We had a jam, and as a result we brought in Davy and did Justus. I think the whole album is entirely under-appreciated. Nobody else was in the studio besides us and the engineer. I wrote 'Run Away From Life.' It's about fantasists. It's sarcastic as all hell, really pretty nasty. But with the album, I think we were operating under some limits we didn't need to. Mostly, I think it was a big mistake for me to not play more guitar. Micky's drumming is just ferocious on that record though."