SLPSystematic ReviewJournal of voice : official journal of the Voice Foundation2026

Variability in Acoustic, Physiological, and Perceptual Features of Belting Among Adult Singers: A Scoping Review.

Sarah R Kervin, Geddy Warner, Celia Sun and 4 others

PMID 42648988

WHAT IT FOUND

Belting has a recognizable bright, loud, chest-dominant sound, but no single definition emerged.

Across 112 publications, over 100 terms were used, and singers varied widely in resonance, larynx position, and loudness.

Key findings

01The review included 112 publications, 58 scientific studies and 54 pedagogical publications, and found no unified definition of belting.

02Scientific studies generally described belting as bright, loud, and chest-voice dominant, with elevated larynx, pharyngeal narrowing, and closed quotient greater than 50%, but subtype definitions varied.

03Listeners could identify belting compared with classical singing, but agreement on subtypes was poor unless auditory anchors were used.

STILL TO COME

How it was doneWhat they foundWhat it means for SLPs

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What it does not show

The review mixed scientific studies with expert commentary and books, so it cannot show which teaching methods work. Many scientific studies had very small samples, and some used single participants, so the findings may not apply broadly. The included singers were mostly professional and female, so findings may not transfer to students, males, or singers with voice disorders. The review used English publications only and may have missed recent or non-English work. Terminology varied so much that studies may have measured different things under different names.

The easy way to misread this

Do not conclude that this review shows any belting technique is safe, effective, or harmful. It maps how belting has been described, not tested outcomes, and the included studies were small and varied.

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