Korg Opsix MkII: What is it? Korg’s ‘altered FM ... Key to its appeal is the distinct way it combines classic DX7-style FM with a variety of other synthesis approaches.

Sure, there had been synthesizers before, but none acheived the sudden popularity of Yamaha’s DX7. “Take on Me?” “Highway to the Dangerzone”? That harmonica solo in “What’s Love ...