Something interesting, and backed by some clinical research: 'rhythmic entrainment'. https://brainshiftradio.com/about.html https://brainshiftradio.com/about.h

Something interesting, and backed by some clinical research: 'rhythmic entrainment'. https://brainshiftradio.com/about.html https://brainshiftradio.com/about.html Their web app plays 2 tracks simultaneously: rhythm & ambient. Personally, I listen to 'focus' tracks constantly while working.