SInES Tools: Color Organ (Historical pitch–color theories and mappings)

MIDI In
Select a theorist and play a key.
The middle octave starting at C4 (256 Hz) displays the original color assignment from the historical pitch-color scale.
Higher octaves are linearly lightened towards white, lower octaves are darkened.
Keyboard Controls
Middle Octave (Oct 4): A S D F G H J K (white keys) · W E T Z U (black keys)
Lower Octave (Oct 3): Hold down the left Shift or Ctrl key + key
Higher Octave (Oct 5): Hold down the right Shift or Ctrl key + key
MIDI Keyboard: Plug & play supported via Web MIDI API :-)