To hear him, you need more than a fiver (5)

I believe the answer is:

tenor

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'to hear him you need more than a fiver' is the definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.

This is the entire clue.

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(Other definitions for tenor that I've seen before include "Higher male voice" , "Eg, Caruso" , "Meaning - male singing voice" , "thread" , "Placido Domingo, say" .)

I've seen this clue in the Evening Standard.

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