Questioning the composition of jazz ensembles in times of upheaval like the Free Jazz revolution is undoubtedly legitimate. But in hindsight it becomes clear that for many leading exponents of this movement, the makeup of the groups was by no means of primary importance. Today, in a phase where the concept of jazz seems to be expanding and in which drawing a line between jazz and non-jazz often becomes problematic, the question of format comes up again. Will the piano trio retain it's dominant role? Qui vivrà verrà.