Composer with a name in German (6)
I believe the answer is:
wagner
'composer' is the definition.
(Wagner is an example)
'with a name in german' is the wordplay.
'with' becomes 'w' (abbreviation**).
'name' becomes 'n' (common abbreviation e.g. on forms).
'in' is an insertion indicator.
'german' becomes 'ger' (abbreviation).
'n' put within 'ger' is 'gner'.
'w'+'a'+'gner'='WAGNER'
(Other definitions for wagner that I've seen before include "German operatic composer, d. 1883" , "Tannhauser composer" , "We rang up the composer" , "German composer of The Ring Cycle" , "German composer of The Flying Dutchman" .)