Experimental chord-following synth
A lower octave (default C1) is reserved for programming chords. When the notes are released the chord will stick until the next chord (don't hold down chords).
Notes above that octave are played like a monosynth, but generate chords using six voices which follow the current chord, and each note plays the chord in a different manner.
Chord progressions can also be programmed and looped using the built-in sequencer. Playing chords live is more fun but might take some practice