Voice classification in non-classical music chart that follows. The ranges given below are approximations and are not meant to be too rigidly applied. Some men, in falsetto voice or as a result of certain rare physiological conditions, can sing in the same range as women. These do not fall into the female categories, instead called countertenors within classical music. Within contemporary music, however, the use of the term "tenor" for these male voices would be more appropriate. Teaching voice within non-classical music is an emerging field. Up to this point, voice teachers and voice research have been largely concentrated with classical methods of singing. However,
The Singing Voice of Japan "Singing Voice" are not expressed in Kanji () as would be standard today, but in Hiragana () that is: うたごえ ("Utagoe" written in Hiragana) instead of 歌声 (the same in Kanji). And at least since the first national Festival of the movement in 1953, its title text was written in Hiragana: "The singing voice is the vitality of peace - The Singing Voice of Japan 1953" (). Concerning the origin of such a particular script, who was one of the founding members of the Choir of the Communist Youth League of Japan, recalled the moment of publication of the first