Atsushi Hoshino is a Korg engineer who contributed to the company's return to flagship analog and hybrid synthesis in the 2010s and 2020s after decades focused primarily on workstations and digital instruments.

Hoshino worked on the Prologue, Korg's polyphonic analog synthesizer with a digital multi-engine section, offering wavetable and FM expansion alongside classic analog oscillators and filters. The Prologue represented Korg's answer to the resurgence of analog hardware among professional musicians.

He also contributed to the Nautilus, a workstation that refined Korg's modern UI and sound engine architecture for contemporary production workflows, bridging the gap between the Kronos lineage and streamlined live-performance instruments.

Notable products: Korg Prologue, Korg Nautilus.