Born in the 1970s, the jazz-rock genre was the most significant and certainly the most controversial development in jazz since the free-jazz movement of the previous decade. The albums compiled here are two of John Dankworth s most significant forays into the jazz-rock genre. 1972 s Full Circle and 1973 s Lifeline both feature an exciting blend of rock s energy and electric instrumentation with jazz s intricate harmonies and melodic contours.