The material presented here was recorded in 1962 during the 5th Jazz Jamboree and features American trumpeter Don Ellis, accompanied by a Polish rhythm section consisting of pianist Wojciech Karolak, bassist Roman Dylag and drummer Andrzej Dabrowski. All the six tracks were recorded live during the Festival, the last of which is an extended suite composed by Polish pianist / composer Andrzej Trzaskowski presented as part of a concert dedicated to the Third Stream (early Jazz-Classical Fusion initiated by American composer Gunther Schuller in the late 1950s). On that track the quartet is accompanied by the Polish National Philharmonic Chamber Orchestra. Of the five shorter Jazz pieces, two are original compositions by Ellis and the remaining three are standards.