The capital of Germany (6)
I believe the answer is:
berlin
'the capital of germany' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for berlin that I've seen before include "Composer < in carriage < in European capital" , "Isaiah, say?" , "Composer of White Christmas" , "City once divided by wall" , "Possibly Isaiah" .)