Augustine 3XABL High Tension Classic/Blue Strings - 3 PackCLASSIC TREBLE SERIES In 1946, Albert Augustine developed and introduced the worlds first nylon classical guitar string as an alternative to the natural animal gut strings that had been the standard. The string was developed with the advice and feedback of Andrs Segovia, the most renowned classical guitarist of the 20th Century. Modern extrusion technology now allows Augustine Strings to offer the original nylon treble formula but with perfect