Soprano's piece (4)
I believe the answer is:
aria
(Other definitions for aria that I've seen before include "Operatic air" , "Operatic song" , "Air in an opera" , "part of opera, maybe" , "complex song" .)
I believe the answer is:
aria
(Other definitions for aria that I've seen before include "Operatic air" , "Operatic song" , "Air in an opera" , "part of opera, maybe" , "complex song" .)