Good to know about the book, thanks. I'm kind of done with books for the moment, wanting to focus on the ears.
As an aside (i.e., hijacking my own post), I only recently discovered that the Amazing Slow Downer App works with streaming services (Spotify, Apple) and YouTube videos. It's, well, amazing. I'd been using Anytune Pro, which is great in so many ways, but can't work with those sources.
Back to Sarpay: he and Elena Pinderhughes are my favorite currently playing flutists. Is there anyone else I should be checking out?