Rubes,
It certainly does improve behaviour as I stood still for ages without needing Miss Whiplash to tell me to do so...
Well that's a first then.
I think two things are required to make the initiative work. A) turn up the volume so you can actually hear it enough that you cannot ignore it, and B) more space to stand and listen so you don't get in other people's way.
Tommo
They could probably do something about A) although B) might be a little trickier. Maybe they could conduct a survey of people's musical preferences at the ticket barriers and only let people in who will appreciate the current selection. There are plenty of different routes round the tube system - people will just have to allow extra time or expand their tastes.
The trouble with Scheherezade is that I only need to hear a little extract of it for it to be stuck in my head for DAYS. Don't get me wrong, I love it, but it's covered in barbs.