Redout! It's probably the most pulse pounding soundtrack I've ever experienced!
Patient Gamers
A gaming community free from the hype and oversaturation of current releases, catering to gamers who wait at least 12 months after release to play a game. Whether it's price, waiting for bugs/issues to be patched, DLC to be released, don't meet the system requirements, or just haven't had the time to keep up with the latest releases.
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For me, it's Xenosaga episode 1 on the PS2. It's performed entirely by the London Philharmonic Orchestra and it's my favorite OST of all times
I'm surprised no one said Touhou yet.
https://www.youtube.com/watch?v=XqH79HDfrr8
Also, I see a lot of love for Celeste and Jet Set Radio in the comments. Y'all have good taste.
Marathon 2: Durandal has only one song, the title theme, but I do like it as a good "get one pumped to play the game" song! From the band Power of Seven.
EDIT: Also, while I don't know if I'd want to just listen to it alone outside of the game
never tried
Jets'n'Guns has a soundtrack that works well for the game. Done by the band Machinae Supremacy. One of the game's levels is set in a future Machinae Supremacy concert.
Also, Bandcamp link for the soundtrack: https://machinaesupremacy.bandcamp.com/album/jetsnguns-soundtrack
Rebel Galaxy - country rock genre? Very unique and different sort of music.
Trine 1 & 2 + Transport Fever 1 - instrumental background music good for concentration, working, studying or just relaxing.