West Germany's capital — Beethoven's birthplace (4)
I believe the answer is:
bonn
This clue is a double definition.
'west germany's capital' is the first definition.
(I've seen this in another clue)
'beethoven's birthplace' is the second definition.
(I've seen this in another clue)
(Other definitions for bonn that I've seen before include "Rhine city" , "German city" , "Capital of the former West Germany" , "First capital of the German Federal Republic" , "W German capital 1949-90" .)