Simplify a note
the simplified note or '' if not valid note
simplify("C##") // => "D"simplify("C###") // => "D#"simplify("C###")simplify("B#4") // => "C5" Copy
simplify("C##") // => "D"simplify("C###") // => "D#"simplify("C###")simplify("B#4") // => "C5"
Simplify a note