I noticed a book that sits in the background on Greg’s teaching videos. I became intrigued and looked it up. I found several other books by the same author. I purchased two of them. I’d love to hear Greg’s comments on this author and these titles as well as the comments of any other members who’ve read either of these books. https://www.amazon.co.jp/Horns-Strings-Harmony-Dover-Books/dp/0486273318 https://store.doverpublications.com/048626484x.html