Bocelli or Caruso, eg (5)

I believe the answer is:

tenor

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'caruso eg' is the definition.
(I know that Enrico Caruso is a tenor)

'bocelli or' is the wordplay.
'bocelli' becomes 'ten' (I can't explain this - if you can you should give a lot more credence to this answer).
'ten'+'or'='TENOR'

Can you help me to learn more?

(Other definitions for tenor that I've seen before include "Pavarotti, for example" , "range of 14 across [GIGLI]" , "Eg, Placido Domingo" , "Male 17" , "General meaning of a male voice" .)

I've seen this clue in The Times.

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