Larynx: where the vocal chords are located, at the upper part of the trachea

Melody: the principal part in a harmonic composition; the main part of a song

Note: a sign or character used to represent a tone; its position and form indicates the pitch and duration of the tone

Pitch: the sound of a particular note; if you're on pitch, you're singing in tune

Pharynx: the tube that connects the mouth and nasal passages with the esophagus