Good stuff! Work by Polish player from long ago (10)
I believe the answer is:
gramophone
'player from long ago' is the definition.
(old-fashioned record player)
'good stuff work by polish' is the wordplay.
I cannot really understand how this works, but
'good' could be 'g' (abbreviation) and 'g' is located in the answer.
'stuff' could be 'ram' (ram can mean to stuff or push) and 'ram' is present in the answer.
'work' could be 'op' (abbreviation for opus) and 'op' is found within the answer.
'polish' could be 'hone' (I've seen this before) and 'hone' is found within the answer.
This accounts for all the letters.
This explanation may well be incorrect...
Can you help me to learn more?
(Another definition for gramophone that I've seen is " Record player".)