150 votesninly commented
You can copy/paste some corresponding unicode characters into the chord symbol (e.g. CΔ, Eº, Gø, etc.), but having the right symbols in the interface along with sharp/flat would be handy.
1 voteninly shared this idea ·
1,431 votesninly commented
For half-flat, flat-and-a-half, half-sharp, and sharp-and-a-half. See graphics at http://en.wikipedia.org/wiki/List_of_musical_symbols#Quarter-tone_accidentals