Passaggio is a term used in classical singing to describe the transition area between the
vocal registers. The
passaggi (plural) of the voice lie between the different vocal registers, such as the
chest voice, where any singer can produce a powerful sound, the middle voice, and the
head voice, where a powerful and resonant sound is accessible, but usually only through vocal training. The historic Italian school of singing describes a
primo passaggio and a
secondo passaggio connected through a
zona di passaggio in the male voice and the a
primo passaggio and
secondo passaggio in the female voice. A major goal of classical voice training in classical styles is to maintain an even
timbre throughout the passaggio. Through proper training, it is possible to produce a resonant and powerful sound.