Some choose a reed organ (3)
I believe the answer is:
ear
'organ' is the definition.
(ear is a kind of organ)
'some choose a reed' is the wordplay.
'some' indicates the answer is hidden within the clue (some of the parts of the word are used).
'EAR' is hidden within 'choose a reed'.
(Other definitions for ear that I've seen before include "Place for a plug" , "Ability to recognise sounds" , "Shell-like (slang)" , "Heed" , "Attention; an organ" .)