Play part with inner energy note to the end (4,4)
I believe the answer is:
peer gynt
'play' is the definition.
(I've seen this before)
'part with inner energy note to the end' is the wordplay.
I cannot really see how this works, but
an anagram of 'energy' is 'eergyn' which is present in the answer.
'part' could be 'pt' (I've seen this in other clues) and 'pt' is found within the leftover letters.
This accounts for all the letters.
This may be the basis of clue (or it may be nonsense).
(Other definitions for peer gynt that I've seen before include "Ibsen drama" , "Norse legend" , "(Son of Ase in) Ibsen play" , "Ibsen play (for which Grieg wrote music)" , "Titled hero" .)