This is a track that generates isochronic beats to entrain brainwaves into different focus modes. It starts at 10hz and ramps up to 15hz over the course of 5 minutes. Background music that is soft, not rhythmic, and minimally disruptive to the iso tones can be played in the background. You do not need stereo to have the effect as it is not binaural.
Cover Credit: https://pixabay.com/photos/background-glass-tiles-square-4798051/
300Hz carrier*