The TENOR has a range is similar to a first soprano. Her part is almost always above the melody. She sings with lightness and bell-like clarity -- and with no vibrato.

The LEAD generally sings the melody, in about the same
range as an alto. The melody in women's barbershop music is pitched a little lower than that of regular choral music. A lead must sing with musical authority, moving smoothly and consistently through her range.

The BARITONE sings a harmony part which is in the same voice range as the lead. A baritone's voice must be flexible, singing with strength and fullness when her notes are below the melody and with a lighter quality, more like a tenor, when her notes are above the lead's.

The BASS is the lowest voice in the chord. Her range is similar to that of a second alto or contralto. She sings
with authority