How to write a harmonic chromatic scale

In a Harmonic Chromatic Scale, the “Set Form” is that the Tonic, Dominant and Upper Tonic notes are only written once. All other notes are written twice. Therefore the notes in the ascending and descending Harmonic Chromatic Scale are the same notes. A Chromatic Scale uses all 12 semitones in the octave, for a total of 13 notes.

You should never use the same letter name three times in a chromatic scale, so we can't write C flat, C natural then C sharp! In fact, the easiest way to write out a chromatic scale using this method is to write in two of each note between the start, end and middle notes you've already worked out.

Step #3 – Using very small whole notes, with a small space between each whole note, write the Harmonic Chromatic Scale ascending and descending. Write one Tonic, one Dominant and one Upper Tonic note ascending and write all other notes twice. Write one Dominant and one Tonic note descending and write all other notes twice.

So, using the Bb chromatic scale again, we will begin by writing in pairs of notes on each line and space between Bb, F and Bb: We added two notes on the lines/spaces for C, D, E, G and A. Then, simply add the necessary accidentals so that each note is a semitone higher than the next.