Are friends electric' on my cheap 1990 Yamaha Pss, the internal soundbank can manage 16 multitrack composition, 6 tracks used here, including drums. Headphone output recording on single audio track : r/synthesizers
YAMAHA PSS-680 MIDI SYNTH with light-theremin mods | Flickr
Yamaha PSS-A50 Keyboard demo: Midi Controller & Much Much More! - YouTube
Yamaha PSS 790 Vector and PCM Synthesizer Mini Keyboard w MIDI Portasound | Reverb