Shamisen three" or "lowered third" refers to tuning the shamisen to honchoshi and lowering the 3rd string (the string with the highest pitch) down a whole step, so that now the instrument is tuned in fourths, e.g. D, G, C. Instead of having a set tuning, such as on a guitar (i.e. E, A, D, G, B, E) or a violin (i.e. G, D, A, E), the shamisen is tuned according to the register of the singer, or simply to the liking of the player. The shamisen player can tune the shamisen to whatever register desired, so long as the above
String instrument string with higher mass per unit length produces the lower pitch. The length of the string from nut to bridge on bowed or plucked instruments ultimately determines the distance between different notes on the instrument. For example, a double bass with its low range needs a scale length of around , whilst a violin scale is only about . On the shorter scale of the violin, the left hand may easily reach a range of slightly more than two octaves without shifting position, while on the bass' longer scale, a single octave or a ninth is reachable in lower positions.