Bilateral stimulation is the use of visual, auditory, or tactile external stimuli occurring in a rhythmic side-to-side ...

Feel free to play this Amazing Relaxation Music for Ambient Backgrounds, good for Meditation and Rest, Sleep and Healing, ...

From an evolutionary standpoint, we’re still not sure whether our brains evolved specifically to process music, or music happened to make use of neural pathways that had developed for other reasons.