This is my first attempt at using photobucket, so bear with me...
Recording the Gloria at the Pietà was quite tricky. Sound and visuals were recorded separately, but we wanted to try to reproduce the effect of being on opposite balconies (we hadn't realised at this point how much smaller the original church had been). So here are some violinists crammed amid recording equipment onto one of the Pietà's dusty balconies:

Peering across the way at our colleagues on the other side of the church, this is all we could see:

Ensemble was a dreadful problem that way, so eventually we recorded the sound on the ground floor of the church in the usual orchestral formation.
The visuals were filmed the next day. Here's a shot of some of us resting between takes:

You can't tell from the photos how bitterly cold it was in there. And those outfits didn't provide much insulation. Most of us were wearing heavy socks, thick tights and boots under the voluminous skirts. For most of us it was our first time getting into a proper laced-up corset. The feminist in me has always been appalled at the idea of corsets - body fascism, organ prolapse, oxygen deprivation etc - but actually, they're quite fun!

As for the musicality of the final result - well I have to agree with Bryn about it being a bit uninspired. There were lots of problems and obstacles, if nothing else from the nature of the building - and a lot of things were hastily improvised. I'm not that surprised that it came out sounding competent but a little staid. But I'm still amazed it came together at all, and it was an incredible experience.