X-System has developed technology which accurately and reliably categorises music by its physical effect on the autonomic nervous system. It does this by modelling the function of the lower brain to predict the effect of music on the arousal of the sympathetic and parasympathetic nervous systems. The technology is known as the Innate Neurophysiological Response to Music (INRM): a human universal, independent of culture or music preference.

X-System can entrain listeners over a period of 15-20 minutes to a lower or higher state of physical arousal, or maintain at a certain level. There are far-reaching applications of INRM in wellbeing and medicine, as well as in the navigation of large music libraries, song selection & recommendation, for both consumers and businesses. Want to change your state? Sleep? Relax? Study? Concentrate? Party? Compete? Driven by real time bio-feedback, X-System recalibrates a personalised playlist to entrain you to your desired physical state or mood within 20 minutes.