Crossword Genius

A-list brought on board to create comedies (7)

Ross

I believe the answer is:

screams

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'comedies' is the definition.
The definition and answer can be both related to communication as well as being plural nouns.
Maybe they are linked in a way I don't understand?

'a-list brought on board' is the wordplay.
'a-list' becomes 'cream' (I can't justify this - if you can you should give a lot more credence to this answer).
'brought on' means one lot of letters goes inside another.
'board' becomes 'ss' (I've seen this in other clues).
'cream' placed into 'ss' is 'SCREAMS'.

'to create' acts as a link.

Can you help me to learn more?

(Other definitions for screams that I've seen before include "Shrill cries" , "Yells" , "Shouts" .)

I've seen this clue in The Independent.
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