Lacking confidence, note, in the skill shown by media boss (5-7)

I believe the answer is:

faint-hearted

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'lacking confidence note in the skill shown by media boss' is the definition.
I can't judge whether this definition defines the answer.

'note in the skill shown by media boss' is the wordplay.
'note' becomes 'fa' (fourth note in sol-fa notation: doh, ray, me...).
'skill' becomes 'art' (both can mean a talent).
'shown by' means one lot of letters go next to another.
'media boss' becomes 'ed' (short for editor).
'fa'+'in'+'the'+'art'+'ed'='FAINT-HEARTED'

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(Other definitions for faint-hearted that I've seen before include "Timid" , "chicken" , "Timorous - find a theatre (anag)" .)

I've seen this clue in The Times.

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