Crossword Genius

Free-structured highly expressive piece of music (8)

Ross

I believe the answer is:

rhapsody

(Other definitions for rhapsody that I've seen before include "Heroic poem or piece of music" , "Ecstatic written or spoken statement" , "Ecstatic expression of feeling" , "Piece of writing" , "epic poetry" .)

I've seen this clue in The Times.
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