The author of "Six Silver Moonbeams, The Life and Times of Agustin Barrios Mangore", Richard D. "Rico" Stover (1945-2019) was a friend and colleague who I dearly miss. Many days a month I walk around in my music store and say: "Rico, we miss you." Before I put this May 9, 2010 interview on my website, only 54 people had been aware it existed in the 2 years it had been available on Youtube.
He even references research I did, I purchased 8 Julio J. Otermin 10" 78 RPM discs, and pushing ahead I learned that these were recorded in 1912, 9 months before Agustin Barrios walked into the recording studio.