Via Facebook, microtonal composer-guitarist David Beardsley posts this wonderful photograph by William Gedney, circa 1966, of composer (and, much later, my teacher) Ben Johnston for his 88th birthday today:
Still near the beginning of his microtonal period, around the time of his Quintet for Groups, Sonata for Microtonal Piano, and Third Quartet, he’s probably juggling 80 different pitches in his head.