Crossword Genius

Singer interrupting his better half with a little number? (5)

Ross

I believe the answer is:

tenor

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'singer interrupting his' is the definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.

'better half with a little number?' is the wordplay.
'better half' becomes 'ter'.
'with' means one lot of letters goes inside another.
'a little number?' becomes 'no' (abbreviated form of 'number').
'ter' placed around 'no' is 'TENOR'.

Can you help me to learn more?

(Other definitions for tenor that I've seen before include "Singer; drift" , "General meaning of an utterance" , "Highest male voice" , "Big bell" , "Male 17" .)

I've seen this clue in the Evening Standard.
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