Toshio Kashio is a Yamaha engineer who contributed to the Motif and Montage workstation series — instruments that defined professional keyboard workstations for two decades.

The Motif series integrated sampling, synthesis, sequencing, and effects into a platform used extensively in production, film scoring, and live performance. Kashio's engineering helped evolve Yamaha's AWM2 sampling and synthesis engine across multiple Motif generations.

The Montage succeeded the Motif with the Motion Control Synthesis Engine, combining FM-X, AWM2, and advanced control capabilities. Kashio's work connects to the broader Kashio family legacy at Casio and Yamaha, though his contributions specifically address Yamaha's professional synthesizer line.

Notable products: Yamaha Motif, Montage.