[Atdiy and Whisker] aka [The Tymkrs] have created a MIDI controlled 8 note modular synthesizer. (YouTube link). The project was designed to highlight some of the modules they have available at ...

Like Behringer's Brains module, 15 of ... chained with additional Behringer synths to create a polyphonic synth of up to 16 voices controllable from a single MIDI controller.