βαρύτονος

Barytonos (βαρύτονος) combines barys ('heavy, deep') and tonos ('tension, tone, pitch'). In Greek music theory, a barys tone was a low or heavy pitch — the opposite of oxys ('sharp, high'). The word described a quality of sound, not a type of singer. Greek music didn't classify voices the way opera would later demand.

The vocal classification system emerged in Italian opera during the 17th century. Composers needed to write parts for specific voice ranges, and they borrowed Greek terminology to name them. Soprano ('above') for the highest. Contralto ('against high') for the low female voice. Tenore ('holding') for the male voice that held the melody. And baritono — the heavy tone, the male voice between tenor and bass.

The baritone range sits roughly from A2 to A4. It is the most common male voice type — most men who can sing are baritones. But opera long treated it as a secondary voice. The hero was a tenor. The villain was a bass. The baritone got the father, the friend, the rival — the complicated roles that required acting as much as singing.

Verdi changed this. His operas from the 1850s onward — Rigoletto, La Traviata, Simon Boccanegra — gave baritones the lead. The heavy tone became the protagonist's voice. By the 20th century, the baritone had become the voice of authority in popular music too: Frank Sinatra, Johnny Cash, Leonard Cohen. The voice that Greek described as merely 'heavy' turned out to be the one most people actually sound like.