The LZX Industries Monolith is a performance monosynth based on the MFOS (Music From Outer Space) Soundlab Plus, featuring a 37 key 1V/Oct keyboard, as well as extensive modulation controls. 

This video demonstrates control via an external sequencer. A Midibox SEQ3 controls both oscillators and gates the envelope generator.

It’s unclear if this is simply a nice DIY synth or if LZX plans to release this commercially.