How to tune an erhu

The standard tuning of the erhu is: the outer strings are tuned to the a note, the inner strings are tuned to the d note, and the relationship between the inner and outer strings is purely fifths.

In the case of standard tuning, the commonly used tuning methods are:

1=D (key of D)1, 5 strings (inner string is set to 1, outer string is set to 5)

1=G (key of G)5,2 strings (inner string is set to 1, outer string is set to 5)

1=G (key of G)5,2 strings (inner string is set to 5). Strong> (inner strings set to bass 5, outer strings set to 2)

1=F (key of F)6, 3 strings (inner strings set to bass 6, outer strings set to 3)

1=C (key of C)2 ? 6 strings (inner strings set at 2, outer strings set at 6)

1=F (key of F)7 ?4 strings (inner strings set at bass clef 7, outer strings set at 4)

1=A (key of A)4,1 strings (inner strings set at bass clef 4, outer strings set at 1)

1= B-flat (B-flat)3, 7 strings (the inner strings are set to the bass 3, the outer strings are set to 7)

In addition, due to the special requirements of some music, there are other different string setting method. For example, the "Two Fountains Reflecting the Moon" requires the outer strings to be set at d and the inner strings to be set at g, which is one pure fifth lower than the standard string setting: "The Great Wall" requires the outer strings to be set at g and the inner strings to be set at c, which is one major second lower than the standard string setting, etc.