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 explicitly dedicated to the support of JCP is Choir of JCP-fans (), established in 2011 in Kyoto by veteran activists of the movement and directed by Tadao Yamamoto, composer, accordionist, choir director and an ordinary member of the National Council of The Singing Voice of Japan: the choir witnesses the historical connection calling itself by the acronym of English official name of the party. Its repertory and artistic activity are strongly linked in the movement, and in various cultural events organized by the Party, the Choir of JCP-fans appears as an element among the joined choirs of the volunteer singers