Attention -- quiet needed by Polish listening device (8)
I believe the answer is:
earphone
'listening device' is the definition.
(I've seen this before)
'attention quiet needed by polish' is the wordplay.
'attention' becomes 'ear' (have the ear of someone is to have their attention).
'quiet' becomes 'p' (music symbol for 'piano').
'needed by' is a charade indicator (letters next to each other).
'polish' becomes 'hone' (I've seen this before).
'ear'+'p'+'hone'='EARPHONE'
(Other definitions for earphone that I've seen before include "Personal sound receiver" , "Hope near (anag)" , "Auditory device" , "Hearing device" , "in which music can be heard" .)