Quietly desire something black (5)

I believe the answer is:

pitch

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'black' is the definition.
(pitch black is a kind of black)

'quietly desire' is the wordplay.
'quietly' becomes 'p' (musical symbol).
'desire' becomes 'itch' (itch is a kind of desire).
'p'+'itch'='PITCH'

'something' is the link.
This may not be correct. It may belong to another bit of the clue.

Can you help me to learn more?

(Other definitions for pitch that I've seen before include "Area of field" , "Hurl" , "Throw or fall headlong" , "Erect (tent); steepness of roof" , "Area for games" .)

I've seen this clue in the Evening Standard.

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