For the most part, the 1980 movie the Blues Brothers was a big goof: Jake and Elwood Blues have to raise money to save the Catholic orphanage where they grew up. Along the way, they cause immense mayhem, run Nazis off a bridge and racked up astronomical expenses while wrecking cars all over Chicago.
But the music was sublime. Ray Charles just killed Shake Your Tail Feather and proved that he still had all his powers. Cab Calloway did Minnie the Moocher, and even in his later years still had the magic. John Lee Hooker had a cameo in a street scene.