Voice classification in non-classical music the muscular, aerodynamic, and acoustical conditions in the larynx and in the vocal tract. The subglottal pressure, the driving force in phonation, needs to be adapted in accordance with the laryngeal conditions.” In other words, the very act of singing consistently within one technique or another literally causes the voice to physically develop in different ways, and thus change the timbre of that particular voice. Another example would be a coloratura soprano in opera. This is not only the highest female voice in opera, but also distinguished by its ability to do vocal acrobatic leaps, fast vocal runs and trills,
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