Ethereal Purple - for goodness sake don't try before it's natural, otherwise you'll end up sounding like that blinkin' Charlotte Church. I used to think she sounded trained up to the eyeballs but realised that was probably an insult to voice coaches.

We've got a lady in our choral group who warbles like nobody's business. It's quite off-putting, to the point where a couple of colleagues have questioned whether it's worth carrying on trying to make a good sound in the face of the onslaught,

I always thought that lack of vibrato and tremolo added to the purity of a voice (as in boy sopranos) but I'm beginning to wonder if my ears have been deceiving me. I love Emma Kirkby's voice and I thought it was because of the lack of warble. I'd better go and have another listen.