Am first changing the finale (6)
I believe the answer is:
ending
'the finale' is the definition.
(I've seen this before)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for ending that I've seen before include "Coda" , "Close - conclusion" , "Closing down" , "Finish" , "Gin den (anag.)" .)