Male voice types are categorized primarily into four main classifications: tenor, baritone, bass, and countertenor. Each type is defined by the vocal range and timbre. Tenors have the highest range, typically singing from C3 to B4, while baritones fall in the middle, ranging from A2 to A4. Basses have the lowest range, usually from E2 to E4, and countertenors, often considered the highest male voice, can sing in the alto range. These classifications help in various musical settings, including opera, choirs, and theater. Understanding male voice types is essential for composers and conductors to assign appropriate roles and ensure vocal harmony within ensembles.