Mayhew left Genesis in August 1971, reportedly due to creative differences and a desire to pursue other musical projects. He was replaced by Tony Banks, who would go on to become an integral part of the band's sound.
His arrival coincided with a defining period in Genesis history. The band retreated to in Surrey, where they spent six months in intense rehearsal and communal living. During this "monastic" existence, Mayhew's professionalism and willingness to bring his own drum kit impressed the founding members, even as they struggled to find their collective voice. Contribution to Trespass
John Mayhew passed away in 2009, largely unnoticed by the music press at the time. Yet, for those who listen closely to Trespass , his ghost remains—a simple, honest drummer who helped a fledgling band take its first real step into the unknown.