The Barbershop Harmony Society began at a meeting on a rooftop in Tulsa on April 11, 1938. The founding father of the society is accredited to Owen Cash. The whole idea was an accident. Mr. Cash only wanted to get a few guys together to sing, however, it turned into a larger organization. He invited 14 of his fellow friends to meet with him at the Tulsa Club. He invited 14 but 26 showed up. They were put on the rooftop so that there singing would not disturb the customers of the club. They sang on the rooftop for several hours. Customers of the club were starting to complain so the next week they moved their meeting to the Alvin Plaza Hotel. When they met at the hotel instead of 26 men showing up, 70 men showed up. The group continued to grow and grow.
Today there are more than 23,000 members of the society between the USA and Canada. These men compete in international competitions and have been since 1939. The winners of the 1939 international competition were the Bartlesville Barflies. There are multiple competitions including: Quartet, Chorus, Senior Quartet, Collegiate Quartet, and Youth Chorus. The female equivalent of the Barbershop Society isSweet Adelines International.