Barbershop harmony is a style of unaccompanied vocal music characterized by consonant four-part chords for every melody note in a predominantly homophonic texture. The melody is consistently sung by the lead, with the tenor harmonizing above the melody, the bass singing the lowest harmonizing notes, and the baritone completing the chord.

The melody is not sung by the tenor except for an infrequent note or two to avoid awkward voice leading, in tags and codas, or when some appropriate embellishing effect can be created. Occasional brief passages may be sung by fewer than four voice parts. Barbershop music features songs with understandable lyrics and easily singable melodies.
The presentation of Barbershop music uses appropriate musical and visual methods to convey the theme of the song and provide the audience with an emotionally satisfying and entertaining experience. The musical and visual delivery is from the heart, believable, and sensitive to the song and its arrangement throughout. The most stylistic presentation artistically melds together the musical and visual aspects to create and sustain the illusions suggested by the music.
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