The 60s and 70s would bring us blues-rock. While the blues movie genre is often associated with being depressed, those 3 movies are the best blues film .
1 : The Blues Brothers
After the release of Jake Blues from prison, he and brother Elwood go to visit "The Penguin", the last of the nuns who raised them in a boarding school. They learn the Archdiocese will stop supporting the school and will sell the place to the Education Authority. The only way to keep the place open is if the $5000 tax on the property is paid within 11 days. The Blues Brothers want to help, and decide to put their blues band back together and raise the the money by staging a big gig. As they set off on their "mission from God" they seem to make more enemies along the way. Will they manage to come up with the money in time?
2 : Cadillac Records
In this tale of sex, violence, race, and rock and roll in 1950s Chicago, "Cadillac Records" follows the exciting but turbulent lives of some of America's musical legends, including Muddy Waters, Leonard Chess, Little Walter, Howlin' Wolf, Etta James and Chuck Berry.
3 : Who Do You Love?
The life story of legendary record producer Leonard Chess, founder of Chess Records, the label that helped popularize Blues music during the 1950s and '60s.