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 Harmony Society the old name for certain legal purposes. The old official name spelled "barber shop" as two words, while "barbershop" is generally used elsewhere. In reference to the acronym SPEBSQSA, The Society has said "attempts to pronounce the name are discouraged". Unofficially, it is sometimes pronounced as if it were spelled "Spebsqua". In late 2004, the Society established Barbershop Harmony Society as its new "brand name", with a logo and identity program released in 2005. Although the legal name remained SPEBSQSA, Inc., the decision was controversial, as many members felt that the new name did not reflect a mission of preservation