Yamaha FB-01 Synthesizer 8 note polyphonic and can be edited via a free computer editor. There is the infamous solid bass sound in it, worth it for this alone. This is similar to the "Lately Bass" of the TX81Z https://www.youtube.com/watch?v=NRk6dOdr4_g Roland Boss Korg Yamaha Dave Smith Moog Novation Akai Sequential Circuits Kawai Nord Access Virus Waldorf Arturia Poineer Synth Synthesizer Modular Drum Machine Sequencer Gear Recording Studio Rack Midi Audio Interface Ableton Live Daw CV Gate Native Instruments NI Maschine MPC