A tenor is a type of classical male singing voice whose vocal range is one of the highest of the male voice types. The tenor's vocal range (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 A♭2 (two A♭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 probably A♭2 in Rossini's rarely performed La donna del lago in the role of Rodrigo di Dhu, written for Andrea Nozzari. Within more frequently performed repertoire, Mime and Herod both call for an A2. 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 (found in "Mes amis, écoutez l'histoire" from Adolph Adams' Le postillon de Lonjumeau and "Loin de son amie" from Fromental Halévy's La Juive). 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 concert pitch since its composition, have this role in their repertoire without transposition.