Focus music that works

After months of using different email addresses to access free sessions of Brain.fm, I have finally signed up as a paying customer. I’ve tried classical music, brown noise and other ambient sounds when I need to focus, but Brain.fm’s Focus music works best for me. I can put on a two-hour loop and forget to get up from my desk to stretch. They have different genres of focus music, like atmospheric, chimes & bowls, nightsounds, as well as Relax and Sleep stations that I have yet to explore. But now that I am a paying customer, I can listen to all their music on both my laptop and phone. They offer five free sessions, then it’s $7 a month or $50 per year. — CD