Vocal range More important than range in voice classification is tessitura, or where the voice is most comfortable singing, and vocal timbre, or the characteristic sound of the singing voice. For example, a female singer may have a vocal range that encompasses the high notes of a mezzo-soprano and the low notes of a soprano. A voice teacher would therefore look to see whether the singer were more comfortable singing higher, or lower. If the singer were more comfortable singing higher, then the teacher would probably classify her as a soprano. The teacher would also consider the sound of the voice; sopranos
The Singing Voice of Japan The Singing Voice of Japan The singing voice of Japan (, "Nihon no Utagoe" / うたごえ運動, "Utagoe-undō") is the name of a social and political movement that emerged after World War II in Japan and based on musical and choral activities of the working class of the entire nation. On the ideological position of communism or democratic socialism, activists of the movement organize choral circles in factories, in schools and in their residential areas. The movement reached its peak in the years 1950–60. Japanese singer Akiko Seki () is generally regarded as the founder of the Singing Voice of Japan.