Duelin' Banjos Sample  Lesson Sample (Early Intermediate Level) Download version. In this Banjo By Ear lesson you will learn the banjo part to "Duelin' Banjos" completely "By Ear." The lesson starts with a full demonstration of the song followed by a detailed "By Ear" lesson of every note and phrase. At the end there is a track with only the guitar part on it for you to perform with.