experimenting with binaural beats/sound therapy in Sometimes I feel dead inside

i’ve found that using these types of music/sound to be incredibly helpful for meditation/relaxation. i’ve been curious about music, notation, phrases and frequency on people. sure theres the mythical brown note, i wasn’t too interested in that. i questioned if it was conditioning or some innate ability that allowed both people to know that a song was happy or sad. was it years of conditioning from cartoons, movies and tv? are there just certain notes that cause a reaction? then there are the different stories of the military wanting to weaponize sound. i have used binaural beats for a while, not knowing i was doing so. the slight dissidence has always been relaxing to me, its part of the reason i enjoy the black metal i enjoy. i found that it worked well with my meditation and often my sleep. i’ve recently been trying to use it a bit more targeted, while sleeping. the first couple nights i found myself waking up easier than normal. which was a good thing. i am terrible at waking up in the morning. i woke up in a relatively good mood. i can’t say i had a problem with it. now after about 4 or 5 days i had my first bad night. i’m not sure if it was due to my falling asleep too late or what. even with that waking up has been better. my sleep tends to be better on the days when i hit the gym compared to when i do not. i am curious to see if there long term cognitive improvements.