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,
Overtone singing the use of a throaty voice. This kind of song is called "a tenore". The other style, known as "cuncordu", does not use throat singing. A tenore is practiced by groups of four male singers, each of whom has a distinct role; the " 'oche " or "boche" (pronounced or , "voice") is the solo voice, while the " mesu 'oche " or "mesu boche" ("half voice"), "contra" ("against"), and "bassu" ("bass") – listed in descending pitch order – form a chorus (another meaning of "tenore"). "Boche" and "mesu boche" sing in a regular voice, whereas "contra" and "bassu" sing