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,
Singing in the Dark starts singing, amazing those around him—and himself—with his magnificent voice. Taking advantage of his gift, he begins singing in nightclubs. Eventually, with the help of a psychiatrist and partly as a result of a blow to the head during a mugging, his memories begin to return, and he realizes that he is the son of a great Jewish Hazzan (Cantor) in Europe. As memories of his parents, who perished in the Holocaust, return to him, he abandons his nightclub career to follow his father's footsteps as a synagogue cantor. The final scene shows Leo (who now remembers that his real