Crossword Genius

Silence on the radio or the funeral march? (4,3)

Ross

I believe the answer is:

dead air

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'the funeral march?' is the definition.
I don't know anything about this answer so I cannot judge whether this works.

'silence on the radio' is the wordplay.
'silence on' becomes 'dead' (I am not sure about this - if you are sure you should believe this answer much more).
'the radio' becomes 'air' (I've seen this before).
'dead'+'air'='DEAD AIR'

'or' acts as a link.

Can you help me to learn more?

(Another definition for dead air that I've seen is " Silence on radio".)

I've seen this clue in the Evening Standard.
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