Just received this yesterday (from Netflix of all places). DG and quartet at the 1983 Montreal Jazz Festival. Only watched about half of it so far but it appears to be a must have for all Dawg fans. Mike Marshall primarily on guitar with some mandocello. Darol Anger, and Rob Wasserman. The band rips and are very tight. Some tunes: Blue Midnight, Opus 38, Gypsy Medley, Dawg Grass, Minor Swing, Cedar Hill and others. Highly reccomended.