Tenor

The tenor is a type of singing voice and is the highest male voice within the modal register. The tenor voice (in choral music) lies between C₃, the C one octave below middle C, and (A₄), the A above middle C. In solo work, this range extends up to (C₅), or "tenor high C." The low extreme for tenors is roughly B♭2 (two B♭s below middle C). At the highest extreme, some tenors can sing up to two Fs above middle C (F₅).

The term tenor is also applied to instruments, such as the tenor saxophone, to indicate their range in relation to other instruments of the same group.

Within opera, the lowest note in the standard tenor repertoire is A₂ (Mime, Herod), but few roles fall below C₃. The high extreme: a few tenor roles in the standard repertoire call for a "tenor C" (C₅, one octave above middle C). Some (if not all) of the few top Cs in the standard operatic repertoire are either optional (such as in "Che gelida manina" in Puccini's La bohème) or interpolated (added) by tradition (such as in "Di quella pira" from Verdi's Il trovatore). However, the highest demanded note in the standard tenor operatic repertoire is D₅ ("Mes amis, écoutez l'histoire", from Adolph Adams' Le postillon de Lonjumeau). Some operatic roles for tenors require a darker timbre and fewer high notes. In the leggero repertoire the highest note is F₅ (Arturo in "Credeasi, misera" from Bellini's I puritani), therefore, very few tenors can, given the raising of pitch since its composition, have this role in their repertoire without transposition. A shift in pitch since the mid 19th century means that the few written top Cs (such as in "Salut demeure" from Gounod's Faust) would have in fact demanded a note at least a semitone lower than today's standard pitch.

Within musical theatre, most tenor roles are written between B♭₂ and A4, especially the romantic leads, although some fall as low as A♭₂ and others as high as G₅.