Continuity mistake: During the scene at Bob's Country Bunker, when the band is playing Rawhide, a bar patron starts dancing on top of a table with a beer in his hand. In the background of the second shot of him, John Belushi is on the stage and has just picked up the bullwhip. In the next camera cut Belushi walks to the end of the stage and picks up the whip again. (01:17:50)
Continuity mistake: During the highway car chase, when the police cars are shown going over the ledge and down the embankment, car number 73 goes over the ledge twice. (01:45:45)
Continuity mistake: When police cars chase the Blues Brothers down Lower Wacker Drive, a number of vehicles parked on Upper Wacker Drive disappear between shots. (01:48:20)
Continuity mistake: When the Nazis are parked in the alley and see the Blues Brothers pass, their car begins to move. In the next close-up shot of the Nazi leader, their car is at a stop. (01:50:05)
Continuity mistake: Near the end of the movie when the brothers are preforming "Sweet Home Chicago", they do a lot of spins and turns. The very last spin they do puts Jake towards the audience and Elwood towards the band. Then the camera angle is changed and Elwood is towards the audience and Jake is towards the band. (01:55:05)
Continuity mistake: When Carrie Fisher is shooting at Jake and Elwood in the tunnel under the Palace Hotel, she hits a water pipe and water sprays everywhere in a mist. In the next shot of Jake and Elwood lying in the mud, there's no spray visible behind them at all. When Jake stands up a few seconds later, the spray is back, but is more directed now. (01:57:39)
Continuity mistake: When we see the Nazis falling in their car, one shot shows the car from above falling into an area without any buildings around the docks. When the car lands however it is in a built-up area of the city. [Due to the lack of available special effects, the crew had to actually drop a car from a helicopter onto the area shown without any buildings because of safety issues. The landing of the car in the city area was edited into the scene, the rest of it was real.] (02:05:45)
Continuity mistake: When Carrie Fisher confronts Jake in the underground tunnel, Jake can be seen wearing a pair of black wellies instead of his usual shoes. (02:10:00)
Continuity mistake: When the Blues Brothers escape from the road construction at the bridge and the Illinois Nazis, Elwood flips their car so it lands behind the Nazi leader's. When the car starts to flip, though, it does so while driving backwards, so it should land with its backside first and Elwood would have to reverse in order to drive back, but it comes down with its front first. Also, as it shoots over the Nazi car, it comes driving off a ramp, and not crashing down at the end of a somersault. (02:10:50)
Continuity mistake: At the end of the movie, just before crashing through the Daley Building, the driver's side rear window is rolled down, then it is up again just before (and as) the car falls apart. (02:11:50)
Continuity mistake: As the Bluesmobile screeches to a halt on the sidewalk at the end of the long chase, it leaves obvious tire trails on the sidewalk. But in the very next shot (when the car breaks apart), the trails are gone. (02:12:00)
Continuity mistake: When the multitude of police are shooting through the door at the end of the film, there are loads of bullets shot at the door, then there are only a couple dozen bullet holes then there is a bunch of bullet holes. (02:12:40)
Continuity mistake: When the Blues Brothers are paying the assessment in the Cook County Assessor's Office, the area behind the assessor has a desk and is not very wide. In the shot where the camera has panned out, it shows a much larger area behind the assessor. Additionally, how did all of the emergency services personnel get in the room without anyone in the shot seeing or hearing them. When it cuts to this scene, the Blues Brothers look surprised, but they should have easily seen and heard this. (02:18:44)
Continuity mistake: In the scene where they go to Elwood's apartment, Elwood puts on a 78 RPM Decca Louis Jordan record. The record is entitled "Saturday Night Fish Fry". But the song that plays is "Let The Good Times Roll".
Continuity mistake: When the Blues Brothers go off the highway down the steep embankment, the cops are directly behind them, however when we cut to the shot of the first cop car crashing, the Blues Brothers' vehicle is nowhere to be seen on the side road up ahead.
Continuity mistake: In the scene where the Blues Brothers visit the Penguin, the door Elwood opens while running away closes between shots and he is seen opening it twice.
Continuity mistake: When Carrie Fisher first attacks the boys with rocket-propelled grenades at the hotel doorway, they dive for the sidewalk and are covered with debris. As they rise moments later and enter the hotel, their black suits and hats are covered in white cement dust. In the immediate next shot, as they climb the hotel staircase, their hats and suits have no dust whatsoever.
Continuity mistake: Spielberg puts the stamp parallel to the paper, but in the close-up it's skewed.
Continuity mistake: When Carrie Fisher is shooting at the Blues Brothers in the tunnel, there are 3 pipes that run along the left side of the wall that aren't alongside Carrie when the camera angle changes to shots of her.
Continuity mistake: At Chez Paul when the sommelier is filling Elwood's glass with champagne, he begins to pour and does so again after the cutaway.
Answer: It's 'Can't Turn You Loose,' often refered to as the Blues Brothers Theme.
rabid anarchist
Also done much earlier by Otis Redding.