Concerto Grosso lacks songster - the one that's theatrically ornate at the end of the Baroque movement (6)
I believe the answer is:
rococo
'end of the baroque movement' is the definition.
Both the definition and answer are adjectives. Maybe there's a link between them I don't understand?
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for rococo that I've seen before include "Ornate late baroque style" , "Highly ornamented" , "More elaborate form of baroque" , "Ornate architectural style" , "Highly ornamental style" .)