Been told I need to relax more, so after a bit of thought and setting parameters such as no need to play too loud, can play on headphones and still sound OK, decent soundstage, can play in the dark (think about it), can contemplate and drift in imagination and thoughts on caves, sounds nice, no silly dancing, etc. I was left with Comfortably Numb by Pink Floyd and a couple of others which may be a bit interesting .  So I'll start with (vids, thoughts, and comments ever welcome):
https://www.youtube.com/watch?v=kUzerWM4lIk