Just stick your head in a bucket to listen to Brahms

Well, the Aspie geeky one and I hit the historical society today but not before he completed some work online.
Walked into the kitchen to find him with the radio blaring 1940s tunes while he was bopping away, doing his Maths Online, with his lapidary ear-muffs on.
Ahuh.
Reason?
He loves old records - 45s, 33s, even 78s - and he loves the crackles, hisses and pops that come through the speakers, hence why he has roaring 40s music roaring.
Plus, music helps people study, focus, pay attention and it works for Aspie geek kid.
But the crackles, hisses and pops are just ever so slightly distracting to him while he's doing Maths Online (which has spoken instructions for each equation).
Sooooooo....the industrial ear-muffs he uses for his lapidary work were the perfect thing to block the crackles, hisses and pops without blocking out the rest of the music.
Makes sense to me!