Marillion Mosleys first concert with Marillion was 27 October 1983 in
Aberystwyth. The band was writing their second album at
Rockfield Studios in Wales, and Mosley joined Marillion as a session drummer, after a long search for a replacement for drummer and founding member
Mick Pointer, who had left the band acrimoniously in April 1983. Mosley was the fifth drummer to play for Marillion and was frontman
Fish's choice for the role, who had been unhappy with the band's previous drummers. Music critic John Franck stated Mosley's "spot-on drumming was the perfect foil for Marillion's meticulous musicianship". He is still a member of Marillion.
Other projects In 1985, Mosley recorded drums on the track
Dream Within A Dream on
Propagandas A Secret Wish. In 1994, Mosley played on
John Wesleys debut album,
Under the Red and White Sky on the tracks
None So Beautiful and
Thirteen Days. Marillion members
Mark Kelly played keyboards and produced the album, and
Steve Rothery played a guitar solo on
Thirteen Days. In 1996, Mosley and
Pete Trewavas recorded an instrumental album at Marillion's own studio the Racket Club with French guitarist and keyboardist Sylvian Gouvernaire (from the French prog rock band Arrakeen). The project was called Iris, and the album
Crossing the Desert was released in April 1996 on the Racket Records label. Science fiction artist
Danny Flynn provided the artwork. In 2001, Mosley joined saxophonist
Ben Castle, son of entertainer
Roy Castle, and they recorded a jazz-themed album together,
Postmankind. The album also featured guest performances by
John Etheridge, Steve Hackett and Marillion members Steve Rothery and Pete Trewavas. Mosley played on fellow Marillion bandmate
Pete Trewavas' and
Eric Blackwood's
Edison's Children album
In The Last Waking Moments..., playing drums on the epic 16 minute
The Awakening. == Musical style ==