As defined by Ric Allsopp in 'Some Notes On Poetics and Choreography', 'something else' is "the tendency for both language and movement to give rise to something beyond or outside the forms and intensities that make them visible and apprehensive to us." Because of its illusiveness, its ability to remain beyond our apprehension, 'something else' can only be described by the means that caused it to arise. It is etiological. Put another way, to discuss an arising 'something else', one must ostensibly discuss composition.
Ric Allsopp, 'Some Notes on Poetics and Choreography', Performance Research 20.1, p4