Any commercially recorded stereo music will work well in mono: many mix engineers do most of their work in mono and even those that don't will regularly check t

Any commercially recorded stereo music will work well in mono: many mix engineers do most of their work in mono and even those that don't will regularly check that it still sounds good in mono. A surprising amount of listening is mono so it's taken really seriously: kitchen radios, canned music in restaurants, bluetooth speaker pill things (like the homepod).