This script could transpose chromonica sheet by semi-tones

A popular way in China to record chromonica sheet is called 数字谱:

Twinkle-Twinkle Lil' Star

1 1 5 5 6 6 5 4 4 3 3 2 2 1

• [] for an octave above
• () for an octave below
• # for a semi-tone up
• b for a semi-tone down
• nested brackets are allowed to represent more octaves

For example, if 1 = C, then #1 = C#, #3 = b4 = F

python chromonica-sheet-converter -o OFFSET input.txt

Try python chromonica-sheet-converter -h for more detail.

Currently doesn't support b symbol as usual chromonica sheet only use #.