Ron Greene's Banjo accompaniment dial. The Banjo Accompaniment Dial Instantly shows you eight accompaniment chords used to play great sounding banjo accompaniment in each key for all styles including bluegrass. The most commonly used chord forms/positions are shown in the music dials. The front of the dial also shows a complete Circle of Fifths/Circle of Fourths in each key. The Back of the Dial is loaded with information and tips about playing, scales and chord extensions including a diagram showing all the notes on the 5-string banjo neck. The instructional CD for this dial contains both lessons and jam tracks. The lessons teach you the fundamentals of music and how to use the dial. The jam tracks provide you with the opportunity to practice using a wide variety of music styles and tempos in all popular major and minor keys.