Music and art and Mathematics

This little gem on Escher: he ‘heard Bach’s Goldberg Variations [and] his mind snapped onto its own gift for rendering meaning through form. Enthralled by Bach’s music, by its mathematical figures & motives repeating back to front & up and down, by “a compelling rhythm, a cadence, in search of a certain endlessness”, Escher felt in it a strong kinship, a special “affinity between the canon in the polyphonic music & the regular division of a plane into figures and identical forms.”