He left the group in May 1967 to form Kensington Market with singer/songwriter Keith McKie, bass player Alex Darou, and drummer Jimmy Watson.
He played acoustic guitar, bass, and synthesizer on Lou Reed's 1973 album Berlin, along with providing the vocal arrangement on "The Bed."
[citation needed] Martynec has performed, composed, and recorded with pop groups and pit orchestras, and created music for visual media and live theater.
[citation needed] Martynec has been awarded Canada Council for the Arts and Toronto Arts Council grants for music composition, and taught signal processing, principles of digital audio, MIDI, studio production, synthesis, and studio orchestration at the Harris and Trebas institutes in Toronto.
In 2004, Martynec moved to Beijing for two years, where he performed in Yunnan Province with Yan Jun, a sound artist, music critic, poet, and organizer, and at several music and art festivals, including the Dashanzi International Arts Festival and the Bookworm Beijing performance venue.