Watch the SECTION 1 online guitar lesson by Karan Andrea from Guitar Player Wanted: Vocals A Plus
If you understand the anatomy of the voice, you will see that the working components are a set of muscles that you must learn to coordinate. They are essentially the same muscles you use to speak, but you must develop them to a much higher degree for singing. The rest of the components are the breath itself, and the spaces and surfaces in your body and head. These enhance the resonance and influence the tone and timbre of your voice.