An operatic voice is a type of singing voice that is used in opera and other forms of musical theatre. The four main types of operatic voices are TENOR, BASSO, heldentenor, and ALTO. Tenors are typically the highest male voice, with a range from C3 to C5. Bassos are the lowest male voice, with a range from E2 to E4. Heldentenors are a type of TENOR with a powerful, heroic sound. Altos are the highest female voice, with a range from G3 to G5.