A baritone is a type of classical male singing voice whose vocal range lies between the bass and the tenor voice-types. The term originates from the Greek βαρύτονος (barýtonos), meaning "heavy sounding". Composers typically write music for this voice in the range from the second F below middle C to the F above middle C (i.e. F2–F4) in choral music, and from the second G below middle C to the G above middle C (G2 to G4) in operatic music, but the range can extend at either end. Subtypes of baritone include the baryton-Martin baritone (light baritone), lyric baritone, Kavalierbariton, Verdi baritone, dramatic baritone, baryton-noble baritone, and the bass-baritone.
The first use of the term "baritone" emerged as baritonans, late in the 15th century, usually in French sacred polyphonic music. At this early stage it was frequently used as the lowest of the voices (including the bass), but in 17th-century Italy the term was all-encompassing and used to describe the average male choral voice.
Baritones took roughly the range as it is known today at the beginning of the 18th century, but they were still lumped in with their bass colleagues until well into the 19th century. Many operatic works of the 18th century have roles marked as bass that in reality are low baritone roles (or bass-baritone parts in modern parlance). Examples of this are to be found, for instance, in the operas and oratorios of George Frideric Handel. The greatest and most enduring parts for baritones in 18th-century operatic music were composed by Wolfgang Amadeus Mozart. They include Count Almaviva in The Marriage of Figaro, Guglielmo in Così fan tutte, Papageno in The Magic Flute and the lead in Don Giovanni.
In theatrical documents, cast lists, and journalistic dispatches that from the beginning of the 19th century till the mid 1820s, the terms primo basso, basse chantante, and basse-taille were often used for men who would later be called baritones. These included the likes of Filippo Galli, Giovanni Inchindi, and Henri-Bernard Dabadie.