what are the different types of vocal music?
['Soprano. For females, the highest voice type is the soprano. ... ', 'Mezzo-soprano. The mezzo-soprano has a lower range than the soprano. ... ', 'Contralto or Alto. The contralto or alto is the lowest female voice and the darkest in timbre. ... ', 'Tenor. ... ', 'Countertenor. ... ', 'Baritone. ... ', 'Bass.']