Notate
Notate will be a tool for generating low-color bmps of staff music notation.

Current Status
I’m using Nasu to draw the sprites and store them as the NES .chr data format. Those sprites are blitted onto a color-indexed image, then the image is rendered into a BMP.
Nasu, a pixel editorWhy BMPs?
In the interest of keeping the tool as simple as possible and removing any dependencies on complex compression libraries, I wanted an uncompressed output format. You can use ImageMagick to compress the result:
notate "drmfsltd" | magick bmp:- my_image.pngImageMagick – Convert, Edit, or Compose Digital Images