During the whole of their Creative period (1974-1976) the duo with by Bernd Töberg (guitar) and Michael Kullick (drums) was strongly shaped by the "Freedom of Coltrane". With this particular style of jazz, to make the total improvisation as the heart of their work, it was the exceptional duo's first time to explore further a random harmony instrument. The high art of improvisation, and the dense congenial interplay of guitar and drums, that comes along thematically most melodic and rhythmic, has been able to unite in a progressive fashion, modern jazz, rock, blues and free improvisation itself. By mid-1976, however, the duo had taken on a musical change…