6.1.4 Micro tones

Half-flats and half-sharps are formed by adding -eh and -ih; the following is a series of Cs with increasing pitches

     
     \set Staff.extraNatural = ##f
     ceseh ceh cih cisih

Micro tones are also exported to the MIDI file.

Bugs

There are no generally accepted standards for denoting three-quarter flats, so LilyPond's symbol does not conform to any standard.

Other languages: French.