I have added a new option to HARMONY (in 3.3.0) to display the note in a special (selectable) font instead of the lyrics. This is to be used with such things as the whistle font mentioned.

This will only work properly if the glyphs are mapped to the absolute MIDI pitch of the note. Thus Middle C is 64, and each step up or down represents a semitone.

Mapping the glyphs in any other way would need a translation table.

If the instrument is usually written in a different pitch to the actual sound (e.g. guitar sounds an octave lower than written) then this will need an adjustment option, not yet implemented.