Stephon Alexander explores resonances between music and physics in Pythagoras’ “music of the spheres,” Albert Einstein’s love of music, Coltrane’s love of Einstein, and his own ideas as a theoretical physicist and jazz saxophonist. It’s a vast, cosmic theme that includes quantum mechanics, superstring theory, the Big Bang, the evolution of galaxies, and the process of scientific theorizing itself. Alexander mines music for analogies to physical reality and credits jam sessions as a method of opening his mind to scientific insights. The comparison between music and physics rests on the fact that sound is a wave with similarities to the wave phenomena that underlie modern physics.