ADD is meant to be a polyphonic bass synthesizer. But ADD can also produce melodic sounds and harmonic atmospheric sound textures. It provides a 16-Step-Sequencer. ADD essentially relies on additive synthesis but uses waveshaping and subtractive synthesis as well. ADD can be controlled by a KORG nanoKONTROL2 connected via USB but is also fully functional with mouse and keyboard (a w s e d f t g z h j / y and x change the octave). All the instruments of the ensemble can be synchronized via the network function.