The JaM Cellars Ballroom inside the Margrit Mondavi Theatre hosts local and national music acts, theater, and events. Located upstairs above the Blue Note Napa in the Napa Valley Opera House. Excellent sound, comfortable seating, and a Full Bar stocked with Wine, Beer, and Cocktail selections. Downstairs the Blue Note Napa offers a full bar and fine dining restaurant, with World Class Musicians performing live nightly in an intimate and visually stunning Jazz Club. Come see some of the most progressive and entertaining bands from all genres in a relaxed environment for you and your friends.