Key signatures with octaves Three tests of key signatures at octaves other than defaults. The third example uses the cancel element to cancel previous key signature octaves MusicXML Part 1 3 major 4 4 2 4 G 2 C 4 2 1 half -2 major 3 6 C 4 2 1 half -2 7 major 3 6 3 6 C 4 2 1 half light-heavy