La Scala song (4)
I believe the answer is:
aria
'la scala song' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for aria that I've seen before include "Operatic air" , "Nessun Dorma, for example" , "Repeated strain" , "Operatic vocal" , "Imitative art work" .)