When is barbershop quartet day ?

Barbershop Quartet Day is celebrated on April 11, every year. It's a celebratio of the style of music that was first documented back in the late 1800s. While men waited to get their hair cut, they sould pass the time by singing and harmonizing songs with the barbers and fellow customers in the shop. Step into yesteryear, find some barbershop quartet music on YouTube, and celbrate #BarbershopQuartetDay