Fill in the Blanks The Human Voice 2Online version An exercise reviewing the human voice in music by PROYECTO ORFEO 1 air-filled tone pitch timbre We use the cavities of our body to improve the or the intensity of a sound . 2 widen vibrate open The lungs must produce enough airflow to the vocal cords . 3 register harmony ensemble A is a particular series of sounds where a singer can sing comfortably and have the same quality ( timbre , power , clarity ? ) . 4 soprano countertenor mezzo-soprano alto Young children sing in the same register as a . 5 SSA BA SA TTA BBA TA Children ? s choirs , are often two - part or three - part , and sometimes include more voices . 6 pitch vibrators Vocal cords are the that produce fine and tone . 7 falsetto tenor alto A female choir includes soprano and voices . 8 female male Countertenor : A voice that is unusually high , light , and agile , even for a tenor . 9 intensify filter vocalize The resonators amplify and the sound . 10 filter amplify intensity The articulators ( tongue , palate , cheek , lips , etc . ) articulate and the sound .