A bit of Leona Lewis singing the 1853 smash hit 'Ave Maria' has appeared on the internet.
The full song is taken from her forthcoming Christmas collection, 'Christmas, With Love', and features some full-on opera-style 'welly'.
It's pretty spectacular, but could perhaps do with a donk or two.[youtube]xyG29P54FQc[/youtube]
(There's a sampler floating around too but that keeps being pulled off the internet.)