Journey had their most successful commercial period with Perry, who joined the group in 1977, and the partnership led to a string of multi-platinum albums.

"Steve and I had some really amazing times together - when we first got together, and for years after that," explains Schon. "He was a very funny guy, and he liked to party with the best of us. In the beginning, when we wrote 'Lights' and 'Patiently', the first two songs we wrote together, we realised immediately that we had chemistry. And the guy was really funny to be around, so we hung out all the time. We were very tight and close for years and years."

Asked what went wrong between the two, Schon says, "Things happen along the way - women come and go, and things sometimes go sideways, which it did, and I was sorry to see that happen, but it did. It wasn't really a fault of anyone's. We all had a lot of different things to deal with: you're growing up, you're in a big band, and you're making lots of money. You're doing whatever you're doing and it's not helping the situation. It's hard to keep it all together. But things happen for a reason."