Urban Decal Pythagoras Sacred Geometry Quote Print - Humming in The Strings. Music is The spacing of The Spheres Black - Kraft Paper,10x10 Regular Matte Sizes: 6x6, 8x8, 10x10, 12x12 Print Finish: Matte Enhanced Matte Thickness: 12 mil, Premium Matte Thickness 21 mil Printed On Fine Art Paper