County girl has performed at the front (7)
I believe the answer is:
donegal
'county' is the definition.
(county of Ireland)
'girl has performed at the front' is the wordplay.
'girl has' becomes 'gal' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'performed' becomes 'done' (done can mean performed or accomplished).
'at the front' says to put letters next to each other (some letters go in front of others).
'gal' after 'done' is 'DONEGAL'.
Can you help me to learn more?
(Other definitions for donegal that I've seen before include "County of NW Ireland" , "Ireland's northmost county" , "Northernmost Irish county" , "Irish town" , "Lean dog (anag) - Irish county" .)