Barbershop music in tags or codas, or when some appropriate embellishment can be created. One characteristic feature of barbershop harmony is the use of what is known as "snakes" and "swipes." This is when a chord is altered by a change in one or more non-melodic voices. Occasional passages may be sung by fewer than four voice parts. Barbershop music is generally performed by either a barbershop quartet, a group of four singers with one on each vocal part, or a barbershop chorus, which closely resembles a choir with the notable exception of the genre of music. According to the Barbershop Harmony
Barbershop music Jazz musician Louis Armstrong told of having harmonized on New Orleans street corners as a boy, and NAACP executive secretary James Weldon Johnson "grew up singing barbershop harmony". English "barber's music" was described in the 17th century by Samuel Pepys as amateur instrumental music. The "Encyclopædia Britannica" considers the 19-century origins of the quartet style as "obscure", possibly referring back to barber's music, or dating to when barbershops served as community centers, where men would gather for social and musical activities with barbers traditionally being musicians. Later, white minstrel singers adopted the style, and in the early days of the