Years ago when I was still an undergrad I was introduced to the music of Harry Partch. After hearing Barstow and attending a lecture on his instruments and tuning system, I wanted to learn more about just intonation. The idea of it fascinated me, despite that I really had no idea what it sounded like.
About a year later I acquired a small, banged up harpsichord and purchased a book by Alain Daniélou, Tableau Comparatif des Intervalles Musicaux. Using the book and a guitar tuner that displayed cents, I tuned an octave of the harpsichord according to the numbers in Daniélou’s book. When I pressed down C, E, and G on the keyboard, I heard something I had never noticed before: a just major triad.