I introduce quietly aggrieved person (9)

I believe the answer is:

presenter

'i introduce' is the definition.
(someone who presents or introduces things)

'quietly aggrieved person' is the wordplay.
'quietly' becomes 'p' (p for piano and quiet).
'aggrieved person' becomes 'resenter' (someone with resentments).
'p'+'resenter'='PRESENTER'

(Other definitions for presenter that I've seen before include "Disc jockey" , "Broadcast introducer" , "shower" , "TV/radio introducer" , "TV person" .)

I've seen this clue in The Times.

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