/* Sixth plus 9 */
{ {{1, 0}, {9, 0}, {3, 0}, {5, 0}, {6, 0}}, "6/9" },
{ {{1, 0}, {9, 0}, {3, 0}, {5, 0}, {6, 0}}, "m6/9" },
+ /* Seventh plus altered 9 */
+ { {{1, 0}, {9, +1}, {3, 0}, {5, 0}, {7, -1}}, "7♯9" },
+ { {{1, 0}, {9, -1}, {3, 0}, {5, 0}, {7, -1}}, "7♭9" },
+ { {{1, 0}, {9, +1}, {3, 0}, {5, -1}, {7, -1}}, "7♭5♯9" },
+ { {{1, 0}, {9, -1}, {3, 0}, {5, -1}, {7, -1}}, "7♭5♭9" },
/* Ninth chords */
{ {{1, 0}, {9, 0}, {4, 0}, {5, +1}, {7, 0}}, "sus" SUP "+M9" PUS },
{ {{1, 0}, {9, 0}, {4, 0}, {5, +1}, {7, -1}}, "sus" SUP "+9" PUS },