Apparently, only you can hear the music and not someone in the same room. Good if you are using music and/or white noise to mask your tinnitus. http://recode.net/2014/06/11/to-sleep-perchance-to-dream-using-technology/ https://www.amazon.com/Dreampad-Advanced-Pillow-Medium-Support/dp/B01N6J7ND5/