He also assisted Billy Cobham in setting up his Moog Modular 55 for various recording sessions (one being Stanley Clarke's 'School Days'), as well as appearing on several other projects, most notably with Herbie Hancock for the Eddie Henderson release, Mahal (Capitol, 1978).
After a brief stint there, the Sequential design team moved over to Korg, where John was product manager for the Wavestation series (keyboard, AD, and SR racks, 1989–1992).
In August 1998 Bowen joined Creamware to develop the Modular system used in Pulsar/SCOPE, as well as assisting in some of their other synth design projects.
Bowen departed Creamware and, after a short consulting assignment with Native Instruments, announced his own software synth company, Zarg Music, in November 1999.
[2] At the 2007 Musikmesse show, Bowen showed a prototype of a new original Bowen-designed keyboard synthesizer named Solaris, to be manufactured in cooperation with Sonic Core and released under the John Bowen Synth Design brand,[3] and eventually Solaris was released.