If you do not already use MyNoise to help you focus at work, then, like, what are you even doing? Sometimes I'll listen to music of various kinds if my work isn't too deep, but whenever I need to concentrate deeply on a problem, MyNoise will have the perfect noise blocker. Go explore the site. It's a lovely little corner of the "classic" internet: no ads, no shenanigans, just this one dude making a technical masterpiece that you can enjoy.