http://www.melbay.com/bigcovers/21714DVD.jpg "For banjo, mandolin, fiddle, and guitar. Taught by Murphy Henry with Red Henry. For many people, learning to hear chord changes is one of the hardest parts of learning to play bluegrass. No matter what instrument you are trying to play. And even if you hear when a chord changes, what chord does it change to? And how do you know?