At the Basilica, we weren't able to go inside because the mass service was in progress already, but there were tiny speakers broadcasting it to the outside, so I was able to record the sounds of the mass without intruding at all (you can hear that it's a recording of a recording from the sound, I think). A moving, lovely thing to be able to hear and yet, even though I couldn't see the service, nor could they see me, I felt guilty, as though I was intruding on a private moment, on someone else's moment, and felt that I should shut down my recorder and move on!
Stuart Fowkes, www.citiesandmemory.com.