Ōshikichō is a tone of the flute used in Noh. It used to be one of the six tones of gagaku, traditional Japanese court music, which used the ōshiki as the main tone, similar to an A note in Western music. However, as the Noh flute cannot be tuned, the sound of each flute is slightly different, and the tone is determined by how each of the seven finger holes are opened. Specifically, the ōshikichō is a melody formed starting from a low sound, ending with the fourth hole opened all the way (or fifth hole depending on the school). Ōshikichō is the standard tone for the flute, although a higher tone such as banshikichō may also be used for some hayashigoto, such as those where the music is the main part.