Show off your musical knowledge with this stylish black t-shirt! The shirt features a grid of musical chords represented using the Mayan numeral system with dots and bars. Made from a comfortable-looking material, this tee is perfect for musicians, music lovers, or anyone fascinated by ancient cultures and numerical systems. Wear it casually or to a music event for a unique and conversation-starting look. A cool shirt to wear for a student or teacher of music!