Found 15 chord chart(s) for 6640x7 in Alternate Tuning (D, A, D, G, A, D).
ChartInversionPositionAvg PitchOpennessDifficulty
6640x7no
604065no
605064no
664005no
665004no
666004no
60406xno
66400xno
664007no
667004no
666097no
66x004no
664x05no
665x04no
66709xno