The typical musical lattice of concert for piano and orchestra is developed here through flirting and confrontation between man and machine (the pianist and the mechanical orchestra): the natural rhythmic force driven by Carles Santos and the speed and precision of a computerised mechanical orchestra; but also from discussion and counter position of two machines with very different timbres. The composition too has brought into play these dynamics which range from dialogue to confrontation between Carles Santos and CaboSanRoque.