In 2007, John released an instructional play-along cd entitled John Judd Jams Vol. 1: Major Blues.  It  is designed to aid students in the art of soloing over common song forms, such as the blues.  It contains grooves in all 12 major keys.  In 2010 John released his second play-along John Judd Jams Vol. 2: Minor Blues.  It has challenging grooves in all 12 minor keys.