The muscles of the back, particularly the latissimus dorsi and the trapezius, play a crucial role in supporting the voice during singing. These muscles help maintain good posture, provide stability to the upper body, and assist in taking deep breaths, which is essential for producing a powerful and controlled vocal sound.
When a singer inhales, the latissimus dorsi and trapezius muscles contract to expand the rib cage and allow the lungs to take in more air. As the singer exhales and produces sound, these muscles help control the release of air and provide support to the vocal cords. This muscular support contributes to the overall projection, clarity, and expressiveness of the voice.
Adequate back strength and flexibility are therefore important for opera singers to achieve optimal vocal performance. Singers often engage in specific exercises and techniques to strengthen and develop the muscles of their back and improve their vocal capabilities.