I read a book titled Elevator Music by Joseph Lanza and am sad to say that I don't remember much about it other than that slaughterhouses played elevator music

I read a book titled Elevator Music by Joseph Lanza and am sad to say that I don't remember much about it other than that slaughterhouses played elevator music for the cattle to calm them before the slaughter, and an anecdote about an orchestra conductor who yelled at a hotel manager words to the effect of, "I'm trying to make my musicians more sensitive to music, not less!" Edit: I forgot that the book also mentions a German category, Gebrauchsmusik, or utility music: https://en.m.wikipedia.org/wiki/Gebrauchsmusik https://en.m.wikipedia.org/wiki/Gebrauchsmusik