Powerless to take in a concert piece (5)
I believe the answer is:
inert
'powerless' is the definition.
(thesaurus)
'in a concert piece' is the wordplay.
I cannot really see how this works, but
'in' is within the answer.
'piece' could be 'r' (abbreviation for Rook) and 'r' is present in the answer.
This may be the basis of clue (or it may be nonsense).
'to take' acts as a link.
Can you help me to learn more?
(Other definitions for inert that I've seen before include "Inter, being unable to move" , "Sluggish, inactive" , "'Not moving, lifeless (5)'" , "Unreactive; still" , "Nitre (anag.)" .)