The tenor is the highest male voice type. Tenors typically sing in the range of C3 to C5, although some roles may require notes as high as A5 or even higher. Tenors are often the leading men in operas, and they are often associated with heroic or romantic roles. Some famous tenors include Luciano Pavarotti, Plácido Domingo, and José Carreras.
Baritone
The baritone is the middle-range male voice type. Baritones typically sing in the range of A2 to A4, although some roles may require notes as low as F2 or as high as Bb4. Baritones often play the roles of villains, soldiers, or friends of the protagonist. Some famous baritones include Giuseppe Verdi, Leo Nucci, and Thomas Hampson.
Bass
The bass is the lowest male voice type. Basses typically sing in the range of E2 to E4, although some roles may require notes as low as C2 or as high as F4. Basses often play the roles of kings, fathers, or wise men. Some famous basses include Samuel Ramey, Ruggero Raimondi, and Kurt Moll.
Countertenor
The countertenor is a male voice type that sings in the alto or soprano range. Countertenors typically use a technique called "falsetto" to produce their high notes. Countertenors are often used to perform the roles of women or castrati in Baroque operas. Some famous countertenors include Andreas Scholl, Philippe Jaroussky, and David Daniels.