The Führer picked up the pieces in Berlin (6)
I believe the answer is:
lieder
'pieces in berlin' is the definition.
'lieder' can be an answer for 'pieces' (lied is a kind of piece). I'm not sure about the 'in berlin' bit.
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for lieder that I've seen before include "Art songs for voice and piano" , "German art songs" , "Relied on classical German song" , "works by Schubert" , "Vocal works" .)