A spirited harp player? (5)
I believe the answer is:
angel
'harp player?' is the definition.
(I've seen this in another clue)
'a spirited' is the wordplay.
'a' becomes 'an'.
'spirited' becomes 'gel' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'an'+'gel'='ANGEL'
Can you help me to learn more?
(Other definitions for angel that I've seen before include "lady (very kind)" , "somewhere in Islington" , "One backing theatre production" , "Glean (anag.)" , "Theatrical backer" .)