Belting (or vocal belting) is a specific technique of singing by which a singer produces a loud sound in the upper middle of the pitch range. It is often described as a vocal register, although some dispute this since technically the larynx is not oscillating in a unique way. Singers can use belting to convey heightened emotional states.
The term "belt" is sometimes mistakenly described as the use of chest voice in the higher part of the voice. The chest voice is a very general term for the sound and muscular functions of the speaking voice, singing in the lower range, and the voice used to shout. Still, all those possibilities require help from the muscles in the vocal folds and a thicker closure of the vocal folds. The term "chest voice" is therefore often a misunderstanding, as it describes muscular work in the chest-area of the body, but the "sound" described as "chest voice" is also produced by work of the vocal folds. However, the proper production of the belt voice according to some vocal methods involves minimizing tension in the throat and change of typical placement of the voice sound in the mouth, bringing it forward into the hard palate.
Atif Aslam, a Pakistani singer is an expert and well known for this. It is possible to learn classical vocal methods like bel canto and also to be able to belt; in fact, many musical roles now require it. The belt sound is easier for some than others, but the sound is possible for classical singers, too. It requires muscle coordinations not readily used in classically trained singers, which may be why some opera singers find learning to belt challenging.
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