A certain singer could be a TENOR, ALTO, SOPRANO, CHOIRBOY, or chantress. Tenors are male singers with a range of notes that are higher than the average male voice. Altos are female singers with a range of notes that are lower than the average female voice. Sopranos are female singers with a range of notes that are higher than the average female voice. Choirboys are young male singers who sing in choirs. Chantresses are female singers who specialize in singing chants.