"What Do Elementary Particles Dream Of?" is an audio visual performance that questions the mysterious correlation between quantum physics and consciousness. The performance is illustrating the fascinating hypothesis that elementary particles, which are the very foundation of our universe, may occupy a multitude of potential states simultaneously until they are measured or observed. This concept echoes the bizarre nature of quantum mechanics, famously exemplified by Schrödinger's cat--a thought experiment that illustrates a cat in a box that is simultaneously alive and dead until someone looks inside. The act of observation has a dramatic effect in the quantum realm; it collapses the wave function, a mathematical description of the quantum state of a system. This collapse seemingly selects one possibility from among many, giving us a single outcome. "What Do Elementary Particles Dream Of?" questions what realities exist beyond our perception? What dimensions of existence are we blind to? A key feature of the performance is the use of live Electroencephalogram (EEG) data from a volunteer in the audience. This brainwave monitoring technology captures the volunteer's cognitive rhythms, and these in turn dynamically modify the performance's music and visuals. This interplay creates a palpable link between the individual's inner mental state and the unfolding visuals, emphasising that the reality we perceive is not only observed but also crafted by our conscious mind.