i have a playlist of a few combined ambient albums which is usually what i go for when studying / writing etc. brian eno has a bunch of good stuff eg music for airports, music for films, and ambient 2 the plateaux of mirrors
I listen to Fubikiru's (did I spell that right?) Touhou orchestral covers. Nice because there are several songs in one video, so I can just click and then not have to worry about getting distracted while choosing a new song. Personally, when trying to focus, I find that its best to listen to music I am familiar with rather than music I have never heard before. Am a big Touhou fan so I know all of those songs by heart now.
the hollow knight OST in general is really good!!! tons of super relaxing tracks, as well as some with a kick in case you need to get a little extra done and want some adrenaline
there are also some HK ambiences on youtube that isolate specific aspects of the ost's instrumentals, which lets some really nice and relaxing aspects of things like greenpath and fungal wastes really shine.
here are some of my favorites:
I am going to be called a basic bitch for this, but I genuinely listen to GameChops's Video Game Study Lounge. I don't normally listen to lo-fi, but their music is energetic enough to help me focus without being too distracting
might as well just post my last.fm and i figure you all may wish to do the same. i basically only listen to music while working or driving so that covers the premise of the thread. also some guy called me the most based individual on earth (: https://www.last.fm/user/vine_st