The term 'male voice' encompasses a variety of vocal ranges. ALTO is the highest male voice, followed by TENOR, BARITONE, BASS, and BASSO. The lowest male voice is COUNTERTENOR. Each of these voices has a distinct range and timbre, and they are used in different musical contexts. ALTO is often used for choral music, while TENOR is used for solo singing. BASS and BASSO are typically used for low-pitched harmonies. BARITONE is used for both solo and choral singing, and COUNTERTENOR is used for high-pitched solo singing.