We stumbled upon two unexpected pleasures in two cathedrals. The first was in Aix en Provence. We happened to walk in on a Sunday evening when the mammoth church pipe organ was being played. It was quite magnificent.
The other was in Carcassonne where we walked into the medieval cathedral when a five piece Russian male choir were singing. Choir singing is one of my all time favourite things and these gentlemen were sublime. There is something about sitting in the serenity of an old dark church and having beautiful harmonies wash over you. A very memorable experience.