The following quotes are from this article about how (and why) Peter Garbiel left Genesis and went out on his own:
“He (Gabriel) was a joy to work with, so smart and witty. It was just that sometimes he was a little overwhelmed by the speed and intensity of the sessions. A British interviewer came out to Toronto to meet him; then the headline declared: 'A Mumble-Free Gabriel!'
"With us he developed a new confidence and swagger. Prior to that he was a bit shy. He had to learn to shout to get through to us. There were just so many characters in their own right involved.”
Ezrin praises the contributions of guitarists Steve Hunter and Dick Wagner, bassist Tony Levin, synth player Larry Fast and other key players.
“We put a fantastic band together. They were like the Dirty Dozen – each of them was a psychopathic expert in their particular field of destruction. It felt like letting the crack criminals out of prison and putting them together in a gang for the Big Job.”