Included in the 1919 Treaty of Versailles that ended the First World War was a convention establishing concert pitch as A = 435 Hz.

This shirt design honors the city of Chicago, the star and coloring is from the Chicago flag.

Size

S, M, L, XL, 2XL

Color

WHITE, ATHLETIC HEATHER, HEATHER DEEP TEAL, HEATHER MAROON, HEATHER PRISM BLUE, SAND DUNE, SMOKE, TRUE ROYAL, VINTAGE BLACK

Image 9 11 25 at 10.27 pm