I’ve used this giorgio regni app on Android for years with various random earbuds.
The only option on its menu that reliably does anything for me is called “morphine pain killer”, but it was a game changer for me for incapacitating sea sickness (believe me I had tried so many things I don’t think I had any placebo potential left). On land, I’ve found it effective for post surgery pain, nerve pain, and even the odd depressive crying jag. I guess at this point I’m a believer so I’d be curious to know what effect it has on a “fresh” patient. I don’t think I’ve tried it just for kicks, though, so not sure what you’ll notice if you’re already feeling ok.
I like your idea, but it just brings to mind how fragile all of our digital media is, not to mention the surrounding tech necessary to read and understand it. What we know works is to press your message to the future, grocery bill, whatever, into clay and then accidentally burn the city down around it – good for millennia.