noun
In movable-do solfège, ド is the first note of any major scale. Common in Japanese music education.
from Italian
ハ長調ではドはハ音です。
In C major, do is the note C.
noun
In fixed-do solfège, ド always refers to the note C, regardless of key.
固定ドでは、ドは常にC音を指します。
In fixed-do, do always refers to the note C.