Conversation so far:
Who wrote the screenplay for The Blues Brothers film?
Aykroyd had never written a screenplay before.
When was the film released?
1978.
What music stars made an appearance in the film?
CANNOTANSWER.
What kind of music was used in the film?
CANNOTANSWER.
Are there any other details about the film available?
The overriding plot premise was unrealistic.

Question: Who directed the film?
Self-contained rewrite: Who directed the "The Blues Brothers"?