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  • Solid color t-shirts are 100% cotton; heather grey is 90% cotton, 10% polyester; charcoal heather is 52% cotton, 48% polyester
  • Ethically sourced
  • Slim fit, but if that’s not your thing, order a size up
  • 4.2 oz (145g), but if that’s too light, try our heavier Classic T-Shirt


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Circle of Fifths
Designed by Thornepalmer
About 2600 years ago Pythagoras created the Pythagorean circle based on the series of harmonics he discovered in vibrating strings. This later would become our circle of fifths. It's still the simplest way for us to visualize the keys and their relationships to one another.

Unisex T-Shirt

Circle of Fifths by Thornepalmer