When played at the right sound level, which is quite high and exciting, the tones in this music will cause your ears to act as neurophonic instruments that emit sounds that will seem to be issuing directly from your head.
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Notes from Wikiquote
Description of how "ears act as instruments and emit sounds as well as receive them (Amacher, 1999)... [and] the way these 'otoacoustic emissions' might function."