This old dot matrix printer has been converted into a MIDI compatible sound generator. Up to 21 notes can be played simultaneously. It features up to 16 MIDI channels with individual volume and pitch. Key velocity for every note played is also implemented.
Circus Galop for player piano by Marc-André Hamelin plays up to 21 notes simultaneously, uses the whole available output frequency range and floods the MIDI interface with a huge amount of messages. It provides a decent stress test for all hardware and software involved.
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