I once experimented with binural beats listening while sleeping from youtube, something simple, put there to open a "3rd eye" After 3 days to a week.

I succeeded, it is a different world out there, more light, more bright more sense, better. Like I had more senses into me and around me. I cant explain it with words. Nothing else but music and beats. No opiates nothing.

It lasted for couple of days and I never was able to repeat it. I tried occasionally .