You really can't play music in an environment where knowledge workers go about their day! That notion is crazy to me. That's like playing disco during a grandma

You really can't play music in an environment where knowledge workers go about their day! That notion is crazy to me. That's like playing disco during a grandmaster chess tournament. Personally I could work with or without the music. My office doesn't play music. If they did I would complain -- sometimes you just aren't in the mood for tunes. That being said I've heard anecdotally that music without lyrics doesn't detriment productivity too much.