A tutorial on how to encode octaves in **kern data.
Octaves
The octave position of a note is indicated in **kern data as
various repetitions of the pitch name as an upper- or lower-case letter.
The middle-C octave is indicated by single lower case letters, and each
successively higher octave repeats an additional lower-case letter to indicate
the octave:
Lower octaves are indicated by successive repetitions of upper-case letters: