prolongational reduction

== English == === Noun === prolongational reduction (countable and uncountable, plural prolongational reductions) (music) The pattern, as perceived, of tension and relaxation among events in various levels of structure, projected from time-span reduction. ==== Related terms ==== stability conditions === References === Lerdahl, Fred (1992). Cognitive Constraints on Compositional Systems, Contemporary Music Review 6 (2), pp. 97-121.