I have ADHD (professionally diagnosed as an adult) and basically cannot focus without music. I complained at work about endpoint management software that was interfering with my music player and was told I didn't need to listen to music while working.

I WFH so I just found another way to play music, but it was tempting to point out to my boss (who I otherwise quite like) that he had just told me that I shouldn't be using a reasonable accommodation for my disability that costs the company nothing, lol.