Associate of blind maestros getting scores out (7)

I believe the answer is:

effaces

'scores out' is the definition.
('efface' can be a synonym of 'score out')

'associate of blind maestros getting' is the wordplay.
'associate of blind' becomes 'eff' (as in the phrase 'effing and blinding').
'maestros' becomes 'aces' (ace can mean an expert or maestro).
'getting' says to put letters next to each other.
'eff'+'aces'='EFFACES'

I've seen this clue in The Guardian.

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