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Belting (or vocal belting) is a specific technique of singing by which a singer mixes in the proper proportions, their lower and upper resonances; resulting in a sound that resembles yelling but is actually a controlled, sustained phonation. 'Belting' is sometimes described as 'high chest voice' but this is technically incorrect, and if done incorrectly can potentially be damaging for the voice. It is often described as a vocal register, although this is also technically incorrect; it is rather a descriptive for the use of a register.^[1] Singers can use belting to convey heightened emotional states.^[2]

Technique

"Chest register" is the lowest register of the singing voice, produced by dominant use of the thyroarytenoid muscle. 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 general term for the sound and muscular functions of the speaking voice, singing in the lower range, and the voice used to shout. Each of those functions requires a thicker closure of the vocal folds and the support of the muscles surrounding them. The term "chest voice" is therefore a misunderstanding when it describes muscular work in the chest-area of the body, or a resonance therein. Proper production of the belt voice, according to some vocal methods, involves minimizing tension in the throat and a change of typical placement of the voice sound in the mouth, bringing it forward into the hard palate, although techniques vary by pedagogical style.

It is possible to learn classical vocal methods like bel canto and also to be able to belt; in fact, many roles now require it. Vocalists trained in a wide berth of styles describe vastly varying experiences in learning belt technique. Some claim that it comes naturally, while others struggle to access chest register other than while speaking. Style of music does not seem to be a related factor, other than in a singer's exposure to material.

Belt technique requires muscle coordination not readily used in classically trained singers as the thyroarytenoid muscle is dominant (as opposed to head register singing where the cricothyroid muscle is dominant), which may be why some opera singers find learning to belt challenging.

In order to increase range and stamina, one must practice, however physiology and physical limitations should always be taken into consideration in a realistic approach. Since belting can be harsh on the vocal mechanism if care is not taken, supervision by a teacher experienced in working with belters is recommended in order to avoid developing lifelong pathologies that could be otherwise avoided. Others recommend repeatedly attempting to hit a note in a melody line, or by using vocalise. Many commercial learn-to-sing packages^[quantify] have a set of scales to sing along to as their main offering, with which the purchaser must practice often to see improvement. However, these packages do not offer a user feedback in terms of posture, breath support, muscular constriction, or any assistance with difficulties that a singer may encounter. Since this is not a separate instrument but a part of the human body, care must be taken not to damage it in a way that may later require surgery, so learning to belt without proper supervision is not advised.

'Belters', as well as other singers, should balance their registers and develop a strong head voice, in order to facilitate muscular coordination and avoid constriction. Some singers, particularly if their chest registers are underdeveloped, find that after a period of time focusing on the belt, the head voice will have improved. Likewise, for a singer with an underdeveloped head register, after a period of time focusing on the head voice, the belt may be found to have improved.^{[original research?]}

Physiology

There are many explanations as to how the belting voice quality is produced. Under a scope, the vocal folds visibly shorten and thicken, and they undulate along more of their vertical surface area than in head register when a smaller segment of their edge must undulate to produce sound.

One researcher, Jo Estill, has conducted research on the belting voice,^[3][4] and describes the belting voice as an extremely muscular and physical way of singing. When observing the vocal tract and torso of singers, while belting, Estill observed:

• Minimal airflow (longer closed phase (70% or greater) than in any other type of phonation)


• Maximum muscular engagement of the torso (in Estill Voice Training terminology this is known as Torso Control or Anchoring)


• Engagement of muscles in the head and neck in order to stabilize the larynx) (in Estill Voice Training terminology this is known as Head and Neck Control or Anchoring)


• A downwards tilt of the cricoid cartilage (an alternative option would be the thyroid tilting backwards. Observations show a larger CT space)


• High positioning of the larynx


• Maximum muscular effort of the extrinsic laryngeal muscles, minimum effort at the level of the true vocal folds.


• Narrowing of the aryepiglottic sphincter (the "twanger")

Possible dangers of belting

Belting without proper coordination can lead to constriction of the muscles surrounding the vocal mechanism. Constriction can consequently lead to vocal deterioration.^[5] Correct use of the technique and, most importantly, retraction of the ventricular folds while singing is vital to safe belting, as it is, in essence a form of "yell" and thus involves a tremendous (roughly +70%) increase in the force exterted on the soft structures of the pharynx vs. more common modes of singing. Attempting to belt too loudly, in too high a register and without properly supporting the ventricular folds are (in combination) the "Three Devils" of the belter; an untrained belter may well consider the short term irritations (hoarseness, throat pain) caused by bad form to be just a "part of the job", when in reality it indicates a flaw in their belting skill that will cause long term serious damage (vocal cord nodules, irreversible loss of former range & timbre) if not changed.^{[citation needed]}

While acknowledging the extra risks inherent to belting, many proponents take pains to point out that is an advanced skill which (so long as it is a "soft yell," and produced properly without straining and pain) is no more damaging to the voice than any other type of singing. Indeed, some genres of singing (such as blues rock) rely on belting to allow the vocalist to "cut through" the electric guitar while playing live. Many in the musical theater industry like to quip, "belting is not bad; bad belting is bad.",^[6]

As for the physiological and acoustical features of the metallic voice, a master's thesis^[7] has drawn the following conclusions:

• No significant changes in frequency and amplitude of F1 were observed


• Significant increases in amplitudes of F2, F3 and F4 were found


• In frequencies for F2, metallic voice perceived as louder was correlated to increase in amplitude of F3 and F4


• Vocal tract adjustments like velar lowering, pharyngeal wall narrowing, laryngeal raising, aryepiglottic and lateral laryngeal constriction were frequently found.

References