I heard this yesterday morning.
Makes me want to look into it a bit more.
As I can read music, I'm very curious to see how his music is scored.
https://en.m.wikipedia.org/wiki/Quarter_toneComposer Ben Johnston, to accommodate the just septimal quarter tone, uses a small "7" () as an accidental to indicate a note is lowered 49 cents, or an upside down "∠" () to indicate a note is raised 49 cents, or a ratio of 36/35. Johnston uses an upward and downward arrow to indicate a note is raised or lowered by a ratio of 33/32, or 53 cents.