Which voice part is typically below the alto for male singers?

The voice part that is typically below the alto for male singers is the baritone. In general vocal classifications, the alto is a range typically sung by female singers, known for its rich, lower notes. Male singers usually have categories that are classified within the same framework.

The soprano, which is the highest female voice, is above the alto in ranges and is not applicable for male singers. The tenor is a higher range for male singers, often above the baritone, which places it alongside or above the alto rather than below. The bass, however, represents the lowest range for male singers, fitting below the baritone.

Baritone serves as the male counterpart sitting comfortably in the range below the alto, often blending harmoniously with female parts, making it the most appropriate answer in this context.