This is a photo from this morning's article on the BBC Breakfast news... "Scientists believe there might be more to choir boys' and girls' voices than meets the ear. Professor David Howard from the University of York has been monitoring the unique sets of frequencies in young choristers' voices. He believes that soloists' voices have particular energy at around 8000Hz, which gives them a special shimmering, resonating sound. Can you hear this as Ripon Cathedral's young choristers sing Ave Maria?"
Nephew Joe is 5th from the left. I saw and heard the whole choir sing on Christmas Day and they really are wonderful, do go and see them if you can, you don't often get quality this good for free.