"Barbershop Harmony" as defined on the Barbershop Harmony Society website is "Four-part, unaccompanied, close-harmony singing, with the melody in the second voice, called the "lead." Tenor (counter-tenor voice) harmonizes above the lead singer, bass sings the lowest harmonizing notes, and the baritone provides the in-between notes to form consonant, pleasing chords. Barbershop is a "melting pot" product of African-American musical devices, European hymn-singing culture, and an American tradition of recreational music. Melodies are in the vocal and skill range of the average singer, with lyrical emphasis on simple, heartfelt emotions."