Crossword Genius

Shut up my solo when I've gone (12)

Ross

I believe the answer is:

posthumously

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'i've gone' is the definition.
I can't judge whether this defines the answer.

'shut up my solo' is the wordplay.
'shut up my solo' can be anagrammed to 'POSTHUMOUSLY'.
Though, I'm not sure how the anagram is indicated.

'when' is the link.

Can you help me to learn more?

I've seen this clue in The Irish Independent.
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