sentence: some singers within these voice types may be able to sing somewhat higher or lower : soprano : c4 -- c6 mezzo-soprano : a3 -- a5 contralto : f3 -- f5 tenor : c3 -- c5 baritone : g2 -- g4 bass : e2 -- e4 in terms of frequency , the fundamentals of human voices are roughly in the range of 80 hz to 1100 hz ( that is , f 2 to c 6 ) for normal male and female voices together ( overtones can produce much higher frequencies ) .