Playing old music to dementia patients seems to bring them "back" to be massively helpful.... I have a fairly large collection of CDs... I put one on, and I am transported to when I was 19....or 24...and everything else about being there ALSO comes rushing back too...people...names...masses of stuff it can be really emotional too....not to sure if our current youth will have this resource...maybe a video rather than real experiences connected to each song...mixes and mashes...it is always streamed and is never yours...are they even going to find it in 30 years?...let alone remember it...YOUR musical history may be REALLY important your future self....