There is a terrific installation at the Millenium Gallery at the moment. The artist has recorded the forty parts of a Thomas Tallis motet and each is played through its own speaker. It is truly moving, and you can stand by any of the speakers and imagine yourself singing the part yourself (excellent for a croaker like me). Anyone else seen (heard?) it?

The other stuff in there by these artists is great too - see link below if you are interested.

http://www.sheffieldgalleries.org.uk/shared/display.asp?ID=269