Stagehand legend facing flu in recording (3,4)
I believe the answer is:
key grip
'facing flu in recording' is the definition.
I don't know anything about this answer so I can't judge whether it can be defined by this definition.
'stagehand legend' is the wordplay.
I cannot really understand how this works, but
'stagehand' could be 'grip' (term for a theatre stagehand) and 'grip' is located in the answer.
'legend' could be 'key' (legend can mean a key on a map or diagram) and 'key' is found within the answer.
This accounts for all the letters.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Another definition for key grip that I've seen is " film-set supervisor".)