3-7/8” Barbershop Quartet Patch S.P.E.B.S.Q.S.A.

The Barbershop Harmony Society, legally and historically named the Society for the Preservation and Encouragement of Barber Shop Quartet Singing in America, Inc. (SPEBSQSA), is the first of several organizations to promote and preserve barbershop music as an art form. Founded by Owen C. Cash and Rupert I. Hall in Tulsa, Oklahoma in 1938, the organization quickly grew, promoting barbershop harmony among men of all ages. As of 2014, just under 23,000 men in the United States and Canada were members of this organization whose focus is on a cappella music. The international headquarters was in Kenosha, Wisconsin for fifty years before moving to Nashville, Tennessee in 2007. In June 2018, the society announced it would allow women to join as full members.

Barbershop Harmony Society

Society Preservation Encouragement Barber Shop Quartet Singing America.

A parallel women's singing organization, Sweet Adelines International (SAI) was founded in 1945. A second women's barbershop harmony organization, Harmony, Incorporated, broke from SAI in 1959 over an issue of racial exclusion, with SAI (like SPEBSQSA and many other organizations) being white-only at that time; SPEBSQSA officially lifted the requirement in 1963. Several international affiliate organizations, in countries around the world, add their own flavor to the signature sound of barbershop harmony.

Since November 1941, the organization has published a bi-monthly magazine titled The Harmonizer.

The original name SPEBSQSA was intended as a lampoon on Roosevelt's New Deal alphabet agencies. Because of the name's length and the difficult-to-pronounce acronym, society staff and members often refer to SPEBSQSA as The Society. For decades, SPEBSQSA was the official name, while the Barbershop Harmony Society was an officially recognized and sanctioned alternate. Members were encouraged to use the alternate name, because it was felt that the official name was an in-joke that did not resonate outside the Society. In mid-2004, faced with declining membership, the Society adopted a marketing plan that called for using "Barbershop Harmony Society" consistently and retaining 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".

Sharp Harmony, a Norman Rockwell painting, appeared on the cover of The Saturday Evening Post magazine issue dated September 26, 1936; it depicts a barber and three clients enjoying a cappella song. The image was adopted by SPEBSQSA in its promotion of the art.

In late 2004, the Society established Barbershop Harmony Society as its new "brand name", with a logo and identity program released in 2005. The legal name remained SPEBSQSA, Inc.