I like any of the Nujabes albums. He makes chilled, mainly instrumental, hip hop music.
Something semi ambient, preferably without lyrics: Tycho, Bonobo, Nujabes
Any rando lofi channel on YouTube/Spotify/Online Radio Stations
I think this is a really good answer. Just search for a focus playlist on whatever platform and let it run.
If I’m picking out music more specific, I find myself thinking about that, and what it’s like, and if it’s helping, and maybe I should hey this other album or artist.
Don’t let picking the music distract too much from focusing on what you want to do.
Not really a album but MyNoise.net has a lot of good generators for background noise. Radio Free Fedi’s Comfy channel also is great for chill study music, and it only plays indie artists that have Fediverse accounts with links to the artist support pages where you can either buy their albums (or songs to build your own piecemeal) https://radiofreefedi.net/.
Autechre’s NTS Sessions. All of them work great, but start with the fourth one.
Perlence subrange 6-36 is good too
In a Space Outta Sound by Nightmares on Wax
Every album by the band Can
I was introduced to them & Cabaret Voltaire around the same time (~100yrs ago). Both are still golden.
Bonobo - Dial M for Monkey
Use something mellow in a different language from your own, it is less distracting.
I like to listen to brasilian Bossa Nova like this Getz/Gilberto Album
Or something without lyrics like Yiruma if you like Piano music.
Robot Science
I just added a bunch of classical to a playlist and then removed the occasional piece I found distracting. I still use that playlist when I need to focus.
Anything by Erang. If you are into medieval mythical themed hymns.
Anything from Hammock. The older albums mostly.
Piano Phase by Steve Reich
Battlestar Galactica OST by Bear McCreary