Allrounder March 28, 2014 by gaby in Cambridge and tagged aluminum, art, arts on the line, B minor, engraved, hammers, instrument, Kendall Band, Kendall Square, math, mathematics, MBTA, metal, metal tubes, music, musical instrument, Paul Matisse, Pythagoras, Pythagorean theorem, sculptor, sculpture, steel, teak, tubular bells, tuned, unique | Leave a comment ² Everyone knows a² + b² = c² but did you know that Pythagoras is a unique playable musical instrument?