Conversation so far:
Who wrote the screenplay for The Blues Brothers film?
Dan Aykroyd
When was the film The Blues Brothers released?
06/20/1980
What music stars made an appearance in the film The Blues Brothers?
The Blues Brothers features musical numbers by singers James Brown, Cab Calloway, Aretha Franklin, Ray Charles, and John Lee Hooker.
What kind of music was used in the film The Blues Brothers?
The Blues Brothers features musical numbers by rhythm and blues (R&B), soul, and blues singers.
Are there any other details about the film The Blues Brothers available?
At Dan Aykroyd's demand, soul and R&B stars James Brown, Cab Calloway, Ray Charles and Aretha Franklin were cast in speaking parts to support musical numbers built around them.

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