I absolutely MUST have music on in the background, there's one very well reviewed working girl that lets me queue up my own playlist.
Another had some generic dance on (Although I am vaguely from that generation so enjoyed it).
Another had her own tunes on which I really enjoyed and had a bit of a chat as to what it was and swapped notes etc.
Also at times, during certain passages of music it can fit or help change the 'rhythm' of proceedings which can be very enjoyable. It can also be a great ice-breaker as well, I find that WG's music doesn't distract me but often accentuates a punt. I like the idea of carrying a small Bluetooth 'burger speaker' or something but I don't really like to travel with much to a punt, just another thing to worry about!