Brain music: Turn on, tune in, feel better To make brain music, a doctor records the electrical activity in a person's brain with EEG equipment. An EEG, in essence, represents the brain's main musical score, and its rhythm and tempo deviate from this depending on a person's waking state, mood and other factors. A complex computer algorithm then translates the recorded EEG patterns into a music CD with two tracks: one for relaxation and one for stimulation