Last parts of national anthem in various keys, without winds (8)
I believe the answer is:
becalmed
'without winds' is the definition.
(as in becalmed seas)
I don't understand how the rest of the clue works.
(Other definitions for becalmed that I've seen before include "(of sailing ship) unable to move" , "Motionless (at sea)" , "still at sea" , "Motionless through lack of wind" , "As a sailing ship without wind" .)