Grand piano I found in city district (4)
I believe the answer is:
epic
'grand' is the definition.
(I've seen this before)
'piano i found in city district' is the wordplay.
'piano' becomes 'p' (musical abbreviation).
'found in' is an insertion indicator.
'city district' becomes 'ec' (I can't explain this - if you can you should believe this answer much more).
'p'+'i'='pi'
'pi' placed inside 'ec' is 'EPIC'.
Can you help me to learn more?
(Other definitions for epic that I've seen before include "Large in scale" , "On a grand scale, like heroic poem" , "Long poem etc" , "eg Beowulf" , "Impressive scope" .)