1980s Yamaha KX-5 Vintage MIDI Remote Keyboard Controller Keytar1980s Yamaha KX 5 Vintage MIDI Remote Keyboard Controller Keytar Released in 1984, the Yamaha KX 5 is a super stylish MIDI Controller in keytar configuration! If this isn't the most 80s and coolest MIDI controller out there, we don't know what is. With a host of handy features, the KX 5 has a fully functional ribbon pitch modulator, as well as unison, sustain and portamento buttons. It also features 2 switchable MIDI channels so you can control 2