Vocal technique is a set of methods and approaches that enable effective and healthy singing. It includes proper breathing, tone control, sound shaping, register management, word articulation, vibrato control, and other elements that enable expressive and controlled song performance. In comparison with the brass instrument playing technique, significant similarities can be observed. These similar elements include correct inhalation and exhalation, proper body posture, articulation, and sound shaping – resonance. Both singers and brass players require and use diaphragmatic breathing which involves the action of diaphragm and rib, back, and abdominal muscles. In both musical activities, the key moment is exhalation. It requires active exhalation, i.e., air support which singers refer to as "appoggio". Similarly, singing and playing brass instruments involve an upright, relaxed body posture that optimizes the functioning of the body's respiratory mechanisms. Articulation is another important link between singing and brass playing, especially the position and action of the tongue. Sound shaping or resonance in both emphasizes the importance of an open throat which is optimal for unobstructed airflow, crucial for shaping quality voice in singers or tone in brass players, and prevents tension in the neck, throat, and tongue muscles, which could lead to injury. Based on these similar elements, exercises are presented in the assignment that is used in choir rehearsals or vocal technique lessons. These exercises are intended for tuba players who should first sing them with careful consideration of vocal technique elements and then play them on the tuba with a similar approach. This can offer many technical solutions for playing the instrument.
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