Playing music while sleeping helps my tinnitus, which helps me sleep, which helps my brain garbage collect. So, in my case at least, the answer is yes.
Nope, an AI probably would have written a better comment. I misunderstood the link. Tinnitus has been getting worse, so this subject has literally been on my mind lately.
It has a hard-paywall (and should be flagged) but you can catch that it's about creating (not listening) from both the image and:
> Several studies have found that professional musicians have more grey matter (the neural tissue involved in thinking, movement and memory) in some regions than non-musicians.