Vocally cool one from Cats -- Lloyd Webber's work? (7)
I believe the answer is:
phantom
'lloyd webber's work?' is the definition.
(musical Phantom of the Opera)
'vocally cool one from cats' is the wordplay.
I cannot quite see how this works, but
'one' could be 'an' (I've seen this in other clues) and 'an' is present in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for phantom that I've seen before include "Wraith" , "Something creepy" , "Illusion (at the opera?)" , "Ballet-dancing costume" , "Blush" .)