Ah, Dr. Vaughan, you were making the pun, but did you know that the word font comes from the Middle French fonte "[something that has been] melted; a casting" ?
The pun put me in mind of the question: even when we find a source of knowledge, how do we know what we know? Context can change the meaning of things. So while I tried to channel the mood of an oracle in this piece, I also sought a way to flip the sonority back and forth in such a way as to make a particular note "mean" something different, depending on what else was going on at the same time.
Wanna try it at home, on your mandolin? Better do it in E; I was a bit flat for E but a bit sharp for Eb, and at any rate E is a lot easier to use for this example. The chord progression would be:
||: E | A6 | E | F6 :||
...the "6" is important, it adds a color. Try that and listen to what happens to the note [A] over the A6 chord; contrast [A] over F6.
