Posture is such an important subject it should really be included in Physiology and Method. Your body is your instrument and postural adjustments affect many areas of singing including diaphragmatic movement (freedom of the breath), mastering of intercostals (supporting the breath), contracting the transverse inferior abdominal muscle (allowing for low, free breath), larynx position (freedom of movement for note articulation), pharynx position (alignment of the primary resonance located in the neck). In other words, it basically affects everything you do as a singer.

As a teacher I recommend good posture in general and show you how you can and cannot move while singing in order to keep a consistent tone quality. Pulling the neck forward to reach the mic is definitely not recommended; bending forward from the hips, however, is fine. Lifting your head for the big finish will sacrifice tone quality; leaning the whole body back from the knees is OK. Lifting your head and smiling to the balcony after you’ve finished the high note is also OK. These things become second nature once you find out how and where your voice resonates for the best tone quality.

We study posture in general and in detail as it relates to the various aspects of singing.