Always. I like listening to basically anything (ambient, classical, jazz, electronic, metal/rock, folk, some rap) but my favorites for studying are definitely the first four on that list. I don't listen to much orchestral classical stuff, mostly piano sonatas/prepared piano/modern classical (steve reich, phillip glass is god tier studying music).
Studying ECE and minoring in math
Madeon / pop punk
hardcore punkrock, metalcore, burzum
ambient space mixes
Anything without lyrics. When there's words (even weebo music where I don't understand any of it) I can't focus at all on what I'm trying to do.
no music when reading, but when problem solving I listen to whatever.
lo-fi hip-hop recently. If I'm doing math problems with no words I can listen to podcasts or music with lyrics but I can't really process two streams of speech at the same time.
melodeath, black metal, deathcore, metalcore and speedcore
Silence is golden. If I have music on, I'm already distracted.