One Track Brain - Gefuhl Operator/Stimulus - OTB#003 Techno Music is a certain type of Stimulus used by Gefuhl Operators called DJ's. Stimulus is an energy change (such as light or sound) which is registered by the senses and that provokes a response. An Operator is a function over the space of physical states. As a result of its application on a physical state, another physical state is obtained. Gefuhl Operator: How much can a song change your mood? How much can a DJ change the vibe of a crowd? It's always more powerful when you can speak with fewer words. By cutting up the word "feeling" itself, this track creates a mood that goes beyond itself, reaching out without touch, speaking with ONE single word to reach a new emotional state. Stimulus: An ode to change, an ode to impulse, an ode to experimentation. An explosion in the lab of One Track Brain. This track is made to stimulate and provoke a response.