Love me some Milt Jackson! The soft tones of that vibraphone are great for background music while studying

https://youtu.be/Fvmv7MCsCP0

If I need to think, I prefer absolute silence (noise cancelling headphones).

If I'm doing something mindless, I'll put on a podcast or audiobook.

breakcore (dnb), maidcore (progressive instrumental metal) or jazz fusion

Deep House

"Elevated Jam Tracks" on youtube (mostly chords and no distracting words/vocals).

Soundtracks to puzzle video games. Spacechem and the rest of the Zachtronics games have Great music that helps encourage concentration in my opinion.

I have the ADHD and unless it's a mindless task, I can't listen to music or it makes it much harder for me to concentrate. For anyone else with the disorder, I'd encourage you to at least give it a shot working WITHOUT music and see if it improves your concentration.

I stumbled upon Russian Cybernetics in some google search related to the academic discipline of cybernetics. I like it as background music because it is mostly a very mellow electronic music. And I don't speak Russian, so most of the lyrics aren't distracting and mentally filtered out. Though some songs have english lyrics.

well not for concentration, but my ambient music is a mix of lemon demon and rain world