The 13th Fugue in The Art of Fugue: also fugue this mirror a is?

Question: If a piece of music is perfect both on its head and also its feet, which one is the inversion?In the previous fugue, fugue twelve, we saw Bach took four voices, a turned everything upside down: 1234 became 4321 and what went up came crashing down. Now, fugue 13 is again a 'mirror' fugue... or is it?This thirteenth fugue is in three voices and uses a technique almost identical to it's sister fugue, number 12, but is still more complicated. Topics Covered: Which comes first in number 13, the rectus or the inversus? --DUE TO PROBLEMS WITH INSTAGRAM (they think Bach's music is 'Branded Content' - yikes. Public domain y'all) I AM MOVING STREAMS TO TWITCH.TV/WTF_BACH PLEASE FOLLOW ME THEREFind a selected playlist of the music found and discussed in this podcast here: https://open.spotify.com/playlist/1Ha250UDFktGqZjpt1hk7L?si=fIqZwtTUQJmzB9SYwskeYA... have you seen: http://bachchurch.com ??? Support us!Why not join Evan's Patreon, where he unique Bach-related insights on a weekly basis:https://www.patreon.com/wtfbachhttps://www.paypal.me/wtfbachhttps://venmo.com/wtfbachhttps://cash.app/$wtfbach  Write us:[email protected] Get full access to WTF Bach at wtfbach.substack.com/subscribe