Billy Strings & Don Julin is the credited name of the bluegrass duo of guitarist William Apostol (better known as Billy Strings) and mandolinist Don Julin. Their collaboration, which lasted from 2014 until 2016, was described by Apostol as a formative mentorship, and ended when Apostol moved to Nashville, TN to pursue a solo career. Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.