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‘Baby Driver’: How Edgar Wright’s Sound Team Choreographed Squealing Brakes Against Pop Classics

Julian Slater learned a new way to sound design, blending Edgar Wright's eclectic musical playlist with the cacophony of bank heists.

Baby Driver Ansel Elgort

“Baby Driver”

TriStar Pictures


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Edgar Wright’s “Baby Driver” offers a sound design that orchestrates car chases, gun fights, police sirens, and ambient noises, choreographed to music. With the narrative conceit that getaway driver Baby (Ansel Elgort) listens to a loud musical playlist (including Beck, The Damned, and Queen) as a defense against tinnitus, we see three heists from his aural perspective.

This meant a learning curve for Wright’s go-to supervising sound editor/sound designer, Julian Slater. “I learned a new way of sound designing to the rhythm of the music, where each track is broken down to its tempo and plucked and pitched to a particular action,” he said. “But the music needed to sound great thematically.”

Baby (ANSEL ELGORT) is chased by the cops in TriStar Pictures' BABY DRIVER.

“Baby Driver”

Wilson Webb

It started with the script, which came with a .pdf file of the musical tracks along with a rough sound mix. Tracking Baby’s life to the beats of the tunes that get him through each day Wright asked the music and sound teams to syncopate the music to the diegetic sounds of Baby’s world.

Slater worked closely with music editor Bradley Farmer to break down each music cue into its own tempo map, which allowed them to correlate tempos with music at a given time. This also required constant pitch shifting, such as the sound of a police siren so it wouldn’t be too weird.

They also had to come up with the sound of Baby’s tinnitus; high-pitched ringing could be an immediate audience turnoff. “We experimented with different sounds,” said Slater. “Sometimes it’s subtle, and sometimes it’s quite a strong thing. We would pitch a certain frequency up or down, depending on the particular music cue. The level of the tinnitus in the mix depends on his emotional state. The more anxious or stressed he gets, the more intense the tinnitus gets.”

Baby (ANSEL ELGORT) and Bats (JAMIE FOXX) on the way to the post office job with Buddy (JON HAMM) and Darling (EIZA GONZALEZ) as cops pull up next to them in TriStar Pictures' BABY DRIVER.

“Baby Driver”

Wilson Webb

The tinnitus ringing begins over the Sony logo, which becomes the braking squeal of Baby’s red Subaru WRX — in the same key as the first music cue, “Bellbottoms,” by the Jon Spencer Blues Explosion. In fact, the genesis of the movie came when Wright was 21 and listening to “Bellbottoms:” He thought it would be a great idea to sync a car heist to the rock song.

Car chase from TriStar Pictures' BABY DRIVER.

“Baby Driver”

Courtesy of TriStar Pictures

The opening heist introduces the genius of Baby’s driving skills and how music serves as his superpower. It’s a symphony of choreographed sights and sounds that flow together — unlike the next two heists, which go awry and contain more of de-tuned sound design.

Tempo changes were difficult to manage with the sound effects. “Bradley showed me to work musically,” Slater said. “How a gunshot works with a kick drum, but not too obviously. For every layer that happens musically, have another layer that happens non-musically so that you perceive it only some of the time.”

In the second scene, we see Baby stride gracefully on a downtown street in a three-minute tracking shot, listening to Bob & Earl’s “Harlem Shuffle” on his way to pick up coffee. He interacts with drivers and pedestrians and takes pleasure in the emotional high of pulling off a heist.

Ansel Elgort and director Edgar Wright on the set of TriStar Pictures' BABY DRIVER.

Edgar Wright reviewing a shot with Ansel Elgort

WILSON WEBB

“We added car alarms, jack hammers, traffic,” said Slater. The audio effect is even mirrored by the visuals as song lyrics, which are written into posters and graffiti, appear on cue.

One of the most difficult challenges occurred came when a gunshot to Baby’s ears deafens him. Slater and the team created a new set of frequencies, altered voices, and other real-world sounds to amp up Baby’s distorted perspective. “As soon as he puts his hand on the speakers, and feels the vibration of the music [“Cry Baby Cry” by Unloved], we opened the world up again so the audience can breathe,” he said.

“Baby Driver”

“For me, just as a sound person and a sound geek, this was unique in many different ways,” he said. “It’s the ability to play the sound from one person’s perspective, coupled with a director who is aware of what the sound process means to a movie.”

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