How to Sing Correctly: Breathing and Vocal Technique Basics for Beginners

People who want to learn to sing often hear the instruction to "breathe from the diaphragm" or "sing from the belly." According to a technical explainer from the voice-science education site VoiceScience.org, this phrase describes the wrong muscle for the job it is meant to explain, and understanding why helps beginners build breath control that actually works.

Breath support: what is really happening

VoiceScience.org defines breath support as the voluntary regulation of exhalation to control subglottal air pressure — the pressure of air just below the vocal folds — during singing. The site notes that healthy adults can generate respiratory pressure up to roughly 204 cmH2O, but singing typically needs only about 5 to 35 cmH2O. The real challenge, it explains, is not producing enough air pressure but preventing too much of it, since the lungs' natural elastic recoil after a full breath creates a pressure spike right at the start of a phrase.

The muscles that manage this release, per the same source, are the external intercostal muscles between the ribs, along with the pectoralis major and latissimus dorsi, which resist the chest's natural collapse as air leaves the lungs. The diaphragm itself is described as a muscle of inhalation: it flattens and descends to pull air in, then relaxes passively during exhalation — the phase in which singing actually happens. Because it cannot be commanded to tighten or release gradually the way a rib muscle can, VoiceScience.org states that the diaphragm cannot be directly used to control breath pressure, even though the instruction to "sing from the diaphragm" is common in teaching studios.

The source suggests the phrase persists because deep breathing that lowers the diaphragm also provides a large air volume and pulls the larynx slightly lower, lengthening the vocal tract in a way that enriches tone — a real benefit of the inhalation technique that over time became attached to the (separate) exhalation-control step.

A basic breathing exercise

The Musicians Institute, a Hollywood-based music college, lists a simple diaphragmatic breathing drill for building breath control, intended as a starting exercise for singers.

1. Lie on your back and place a light book on your stomach.
2. Inhale deeply through the nose, aiming to make the book rise rather than letting the chest or shoulders lift.
3. Exhale slowly through pursed lips for five to ten seconds, keeping the release even.
4. Repeat the cycle to build respiratory capacity and awareness of low breathing.

The same institute also describes a resistance exercise it calls the "shhh" breath: inhaling deeply, then exhaling on a steady, controlled "shhh" sound for as long as possible, which it says strengthens the diaphragm and abdominal muscles involved in controlling airflow. A related exercise uses a drinking straw: singers hum or sing simple phrases through the straw, which creates back-pressure that the Institute says helps the vocal folds vibrate efficiently with less strain.

Warm-ups beginners can use

Before working on songs, the Musicians Institute recommends short vocal warm-ups to coordinate breath and voice and reduce tension.

Protecting the voice while learning

The U.S. National Institute on Deafness and Other Communication Disorders (NIDCD), part of the National Institutes of Health, notes that an estimated 17.9 million adults in the United States report having a voice problem, and that singers are among the groups at greatest risk of voice injury. Its guidance states that voices should be supported with deep breaths rather than relying on the throat alone, and advises against extremes such as screaming or whispering, speaking or singing through hoarseness, and inadequate hydration.

The NIDCD also recommends keeping indoor air at around 30 percent humidity, especially in winter or dry climates, and balancing caffeinated or alcoholic drinks with extra water. It lists warning signs that should prompt a visit to a doctor: ongoing hoarseness or raspiness, losing the ability to hit high notes, the voice suddenly sounding deeper, a raw or strained throat, difficulty talking, or repeatedly needing to clear the throat.

Putting it together

Taken together, the sources point to a simple sequence for beginners: build awareness of low, full inhalation with exercises like the book drill; practice controlled, steady exhalation with resistance exercises such as the "shhh" breath or straw phonation; add short warm-ups like lip trills and sirens before singing; and watch for the NIDCD's warning signs of vocal strain rather than pushing through discomfort.