#Vocalwarmups are intended to accomplish five things: a physical whole-body warm-up, preparing the breath, preparing the articulators and resonators, moving from the spoken register to the singing register (or an extended spoken register for acting), and preparing for the material that is going to be rehearsed or performed. Physical whole-body warm-ups help prepare a singer or actor's body in many ways.
Muscles all over the body are used when singing/acting. Stretching helps to activate and prepare the large muscle groups that take care of balance and posture, and the smaller muscle groups that are directly involved with breathing and facial articulation. Stretches of the abdomen, back, neck, and shoulders are important to avoid tension, which influences the sound of the voice through constriction of the larynx and/or breathing muscles. Actors (including opera singers or musical theatre performers) may need to do a more comprehensive physical warm-up if their role is demanding physically. Preparing the breath involves not only stretching the many muscles involved with respiration, but preparing them to sustain exhalation during long singing/speaking passages. Specific training of the respiratory muscles is required for singers to take very quick deep breath and sustain their exhalation over many bars of music. A good vocal warm-up should include exercises such as inhaling for 4 counts, then exhaling for 8 counts (and slowly transitioning until the performer can inhale for 1 count and exhale for as long as possible); panting or puffing air are also used to engage in the intercostal muscles. Vocal articulation is controlled by a variety of tissues, muscles, and structures (place of articulation), but can be basically understood as the effects of the lips, the teeth, and the tip of the tongue. Often we also try and use our jaw for articulation, which creates unnecessary tension in the facial muscles and tongue. A good vocal warm up will relax the jaw, while activating the lips and the tongue in a variety of exercises to stretch the muscles and prepare for the more defined vocal articulation that is required when singing or acting.
These exercises may include tongue twisters, or the famous "me, may, ma, moh, moo" that many actors are seen doing in film. Resonators are the hard and soft surfaces within the oral cavity that affect the sound waves produced during phonation. Hard surfaces, such as the hard palate, cannot be controlled by the singer, but soft surfaces, such as the soft palate, can be trained to change the timbre of the sound. A vocal warm up should include exercises which direct sound towards these hard and soft surfaces – these exercises can incorporate a variety of sound effects, including whoops, wails, and nasal sounds. Other exercises can help singers/actors be aware of lifting the soft palate, which can create a darker richer timbre when singing – an example would be simulating a sudden shocked gasp, and then maintaining the openness at the back of the mouth. weki weki
