Please pardon my self-indulgence in mentioning this, but musicologist Dragana Stojanovic-Novicic sends me an excerpt from a letter she found in the Paul Sacher Stiftung from Nancarrow to Charles Amirkhanian, and she insists that I blog it. It says,
I forgot to tell you, Kyle Gann is going to do my biography. Before I went to Germany he was here for a few days and we had a very pleasant visit. I had never heard of him before, but he brought a cassette of his music, and apart from being very simpatico he is a very good composer.

Masculine reticence is so terrible and moving! So sad that Mr. Nancarrow couldn’t compliment you directly; so sweet that you received the compliment after all.
Parallel examples from my life — in which I served as conduit of compliments otherwise not received — come to mind, but discretion prevents me from saying more.
KG replies: What a nice take on it. Someday you’ll have to tell me the details.