Yoneda Lemma connects the universal world of functors to the universal world of morphisms. Yoneda Lemma is Xenofeminist thinker, artist and archaeologist, Katrina Burch, practicing music in order to remember the universe. Music contains revolutionary thinking; sounding with the universe is a fulcrum for earth’s evolution. The aesthetic science of digital music ought to give back to earth, for earth affords it an objective position equal to that of any hard science. Yoneda Lemma’s dense and complex harmonic layers dig into the sound, shifting elements from one to another.