The exact chemical composition of a fibre's glass determines how transparent it is to different frequencies, and also its tendency to disperse those frequencies even when it is transparent.
But here, as with a segment called "Riffs on Agon" (which took inspirations of movement and music from Igor Stravinsky's "Agon, " a 1957 ballet by George Balanchine) and with the world premiere of "Orbit" (a composition for solo cello by Philip Glass), Lil Buck looked somewhat constrained held back by efforts based more on set choreography than improvisation.
The company has tweaked the chemical and atomic composition of the raw materials of the glass, which in turn has increased its density -- making it much more scratch and dent resistant than last years model.