Part of sad elegy for English singer (5)
I believe the answer is:
adele
'english singer' is the definition.
'part of sad elegy for' is the wordplay.
'part of' says the answer is hidden in the clue.
'ADELE' is hidden within 'sad elegy for'.
(Other definitions for adele that I've seen before include "Female singer from London" , "girl" , "Performer" , "Popular female singer" , "Female English singer-songwriter, b. 1988" .)