While the three other instruments hold a cluster of high notes, the cellist’s silent gestures interact with them, provoking a windy sonority that becomes noisier as the cellist’s gestures become more energetic.

A short interlude employing conventional playing techniques (bows are applied on the strings in the usual way, though sounds are still high and dissonant).

A rich mixture of tremolos and glissandos at various speeds in the highest register. Each part of the quartet descends progressively into the medium register: a sound colour with greater solidity emerges.

The first violin plays high notes once again, this time “flautando” i.e. with a flute-like tone (by lightly bowing across the end of the fingerboard). The other instruments follow suit until a disparate mix of “flautando” and “sul ponticello” is established and enriched by granular synthesis from the electronics.

Louder notes and groups of notes irregularly irrupt, often using a “gettato” bow stroke: the player lets the bow freely rebound against the string-once or several times in a row like a ping pong ball.

From this point onward all the preceding techniques are increasingly varied and combined. Identifying them becomes more challenging. Good luck!