Arrow Up/Right: Next Harmonic

Arrow Down/Left: Previous Harmonic

Space: Toggle Note/Chord Mode

Enter: Open Harmonic Series Modal

1-0: Select Harmonics 1-10

QWERTY: Select Harmonics 11-16

ASDFGHJ: Select Harmonic Series 0, 2, 1, 12, 23, 13, 123

ZXCVBNM: Select Harmonic Series F0, F2, F1, F12, F23, F13, F123

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MIDI keyboard control is available in Chrome.

Default MIDI mode: the notes of the harmonic series for horn in F control all harmonic series. C1 selects the 1st harmonic and C5 selects the 16th harmonic; above that, each following harmonic is mapped chromatically by semitone.

In default MIDI mode, the harmonic series are selected with the low notes below C1: B♭0 = 0, A0 = 2, A♭0 = 1, G0 = 12, F♯0/G♭0 = 23, F0 = F0, E0 = F2, E♭0 = F1, D0 = F12, D♭0 = F23, C0 = F13, and B-1 = F123. Because octave names may vary between keyboards and software, these correspond to MIDI notes 34 down to 23.

Small keyboard mode: if you only have a 2- or 3-octave MIDI keyboard, press the MIDI button at the top of the screen. In this mode, the chromatic notes from middle C select the harmonics, and the notes in the octave below middle C select the different harmonic series.