Four pieces based about surface in three point of view: 1) Surface as a body; 2) Surface as a relation between bodies (man, instrument); 3) Surface as primitive geometric-gestural micro-patterns connected to each other and endowed with an univocal line which gives them a schematic motion partly –  A) Between: exploration of space between pianist and instrument. B) Through: exploration of gesture and search of internal player tempo/time. C) Around: figural exploration – with actions – characterised by local circularity. D) Over: figural connections and gestures between pianists, until conclusion of whole actions. – Surface as a cycle Between → Birth and space-context exploration; Through → Growth and time exploration (possible evolutions); Around → Actions implementation and balancing through special attitudes; Over → Sharing, overcoming, decline and loss.