He wondered if I knew of anywhere where he could get some background sounds of the Tube, to use as background "music" to add to the effect of his installation (more pictures here).
"Sounds of the roaring trains, their brakes, the crowd on the platform and in the trains, various buskers, dogs, and especially the lady's voice saying things like, 'please stand clear of the doors,' or 'this is a Bakerloo Line train to Elephant & Castle,' and all the other wonderful things she says. Even that man who shouts out so loud over and over about the Gap, why not."
If anyone knows of any other places that have Tube sounds Alan Nazerian would love to hear or even if you fancy going out and recording some for him, you know that people in an art gallery in Chicago may well be listening to them. His contact details are at the bottom of his webpage.