It's an absolutely trivial matter...
...But I've always been intrigued by that hymn they were singing in church when the roar of the airplanes passing overhead drowned them out. Intrigued because I didn't recognize it.
So I decided to track it down, and I now have a title. "Who Would True Valour See." It's on youtube.
http://www.youtube.com/watch?v=5LwZvJf431U
Nice little hymn.