He has tune played, capriciously, as they draw their weapon (9)
I believe the answer is:
unsheathe
'capriciously as they draw their weapon' is the definition.
The definition suggests an adverb but the answer is not.
'he has tune played' is the wordplay.
'played' indicates an anagram (letters playing around).
'he'+'has'+'tune'='hehastune'
'hehastune' with letters rearranged gives 'UNSHEATHE'.
Can you help me to learn more?
(Other definitions for unsheathe that I've seen before include "Draw out (a knife)" , "Take out of scabbard" , "Remove from cover like sword" , "Draw (weapon)" , "Draw from a scabbard" .)