Depends on the situation. While working, I think lots of us listen to music where the main merit is being non-distracting. In this case, effort is not so important.
If I’m actually listening to the music, I’ll want it to be good.
If you're working with C, your developer environment should include, in addition a good text editor and debugger, a fully furnished recording studio so you can record an album while waiting for your program to build.
If you'd like to increase your income, you can try making formulaic smooth jazz for Spotify playlists instead of pretentious concept albums about your childhood trauma that no one will actually listen to ;)
If I’m actually listening to the music, I’ll want it to be good.