A profit one managed for instrument (5-5)

I believe the answer is:

forte-piano

'instrument' is the definition.
(forte-piano is a kind of instrument)

'a profit one managed' is the wordplay.
'managed' indicates anagramming the letters.
'a'+'profit'+'one'='aprofitone'
'aprofitone' is an anagram of 'FORTE-PIANO'.

'for' acts as a link.

I've seen this clue in the Sydney Morning Herald.

Want a hint initially instead of a full solution? Install my app