In article ,
The Artist wrote:

"MINe 109" emitted :

http://news.bbc.co.uk/1/hi/entertain...ic/3564071.stm

They could economize by playing every other note, note.

Vibrato should be an optional extra. It involves a lot more
concentration and physical effort..

I hope opera singers won't get paid by vibrato width! Look what they do
for free.

Stephen