All of the best jazz musicians know that there are certain rare nights when the audience joins the band when it listens with intensity, intelligence, and appreciation at levels so high that the quality of the music leaps upward. That is what happened one night in 1979 at the Northsea Jazz Festival. Guitarist Joe Pass and bassist Niels-Henning Ørsted Pedersen played for a house full of listeners who accepted and encouraged them on every level; intellectual, emotional, visceral. The artistic license Pass and NHØP took from that unreserved approval led to some of the most unrestrained playing either man had ever achieved. All of the music was familiar, five standard songs and a blues. What they did with it was far from familiar. A remarkable percentage of their playing was jazz in its highest state: pure, original improvisation, without recourse to comfortable phrases or clichés.