"Der Freischutz" composer (5)
I believe the answer is:
weber
'der freischutz composer' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for weber that I've seen before include "Carl Maria von ---, composer; Max ---, sociologist" , "German musician" , "Composer of Der Freischutz, d. 1826" , "German composer of Der Freischutz" , "Unit of magnetic flux, composer" .)