MIntavalla consists of an Interval circle and two keyboards underneath:
an upper melody- and a lower harmony keyboard.
It illustrates musical events by analysing and specifically colouring chord intervals (lower harmony keyboard) and melody intervals (upper melody keyboard) in realtime:
– chord intervals related to the tonal center established by the first chord root being played
– melody intervals related to the chord root currently being played (upper melody keyboard)
– the interval circle above the keyboards highlights the chord currently being played (here: G minor) and also re-
cords the chord interval levels of all chords relative to the tonal center (outer interval ring).
– the (adjustable) colors always represent the absolute semitone distance of the chord and melody notes to the respective tonal center or chord root.
Mintavalla works purely with realtime MIDI data.
https://sourceforge.net/projects/intavalla/
