Says ELISION's note: "In physics and cosmology a world-line describes the path an object takes through four-dimensional spacetime. Here, the journey is marked by the energies of fifteen different vortices that fling the listener and performer ever outwards into new sonic dimensions . . . 'world-line' described as a 'cycle' is not some kind of Baroque suite. Rather, its sections are conceptualised as universes in which a 'particle' of sound in one position can potentially find non-linear connection to any other sound. Theoretical physics proposes a way of imagining musical relations that are emergent in nature also allowing for the contingency of improvisation and split-second responses in a complex notational net."