9 Actors Who Completely Transformed Their Voice For A Role

Actors are often applauded for their physical transformations or their overall performances, but their vocal transformations rarely get as much attention. Great vocal choices aren’t necessarily blatantly noticeable. Sometimes, they are subtle but require tremendous energy and practice.

When actors choose to make radical changes to their voice, they aren’t simply changing their pitch; they are reshaping their identity to fit that of the character. Not only is this a physically difficult change, but it also demands a tremendous amount of focus and a keen understanding of the character an actor is playing.

What are some of the most notable vocal decisions made by actors?

Let’s jump right in and take a look.

9 Most Incredible Vocal Performances

Here are nine vocal performances that are commendable acting decisions.

1. Marlon Brando - The Godfather (1972)

Directed by Francis Ford Coppola

Marlon Brando's historic vocal decision in this role resulted in a guttural and husky performance that reflected both his threat and vulnerability as an aging patriarch. Brando’s approach was menacing while remaining intimate, powerful, and commanding.

When we meet Vito for the first time, Coppola and Brando want us to know that we are meeting him at a time when his influence has reduced. Subliminally, Brando’s vocal decisions help the audience perceive this. When his health deteriorates, his voice reflects denser fragility, summing up his iconic performance as a fading mob boss.

2. Austin Butler - Elvis (2022)

Directed by Baz Luhrmann

Austin Butler captured the immersively endearing qualities of Elvis’s Southern voice with enthusiasm and style. Butler’s remarkable consistency ensured that even a single gasp did not sound out of character. He captured Elvis’s charisma, charm, and rhythm equally through his acting and vocal performance. In retrospect, the decision feels so transformative that one wonders how different the film would have been had it not been for Butler’s brave vocal decision.

3. Meryl Streep - The Iron Lady (2011)

Directed by Phyllida Lloyd

How can we ever forget Meryl Streep’s iconic Margaret Thatcher? Streep meticulously recreated Thatcher’s resonant voice that felt so far from her own. Her decision to not only make this vocal choice but to adhere to it throughout the film, while also transforming it subtly over the course of the movie, made her Thatcher incredibly authoritative without feeling like a caricature.

Meryl Streep’s performance in this movie is a testament to how directors must trust great actors to make characters their own because they see what’s on the page through their own wealth of experience and skill set.

4. Tom Hardy - The Dark Knight Rises (2012)

Directed by Christopher Nolan

Tom Hardy’s threatening voice for Bane set the tone for Christopher Nolan’s final film in The Dark Knight trilogy. Unforgettably muffled by his mask, Bane’s menace travelled not just through every word, but through every breath. Hardy ensured that the mask he wore felt far from a decorative piece by creating an intimidating voice that mirrored its visual terror. The harshness in his voice amplified Bane’s enigmatic fear factor.

5. Daniel Day-Lewis - There Will Be Blood (2007)

Directed by Paul Thomas Anderson

Daniel Day-Lewis gave us a Daniel Plainview who oscillated between a carefully orchestrated gentlemanly image and a sinister-toned oil man solely based on his eccentricity and hunger. Day-Lewis’s vocal choices mirror Plainview’s transitions from a man with a persuasive charm to a menacing businessman who is a force to be reckoned with when threatened.

These moments aren’t just character evolution decisions; during some scenes, we witness both sides of Plainview in a starkly contrasting manner, underlined by his masterful vocal changes that demand our attention.

6. Gary Oldman - Darkest Hour (2017)

Directed by Joe Wright

Gary Oldman created a memorable Winston Churchill by portraying his gravitas and vulnerability through an effortlessly strong performance and commendable vocal decisions. He captured Churchill’s rumbling authority while also reflecting the undercurrents of his personal conflicts that depicted a remarkable differentiation between his iconic speeches and his private moments. At no point in the film does Oldman’s performance feel like an imitation. It always feels like a recreation.

7. Natalie Portman - Jackie (2016)

Directed by Pablo Larraín

Natalie Portman brilliantly landed Jackie Kennedy’s accent and elegance by putting tremendous focus on mirroring her voice. Some may find this performance to be a bit like a caricature, but I don’t think so. Not by a long shot. What Portman chooses to do in this film is a delicate reflection of Jackie’s persona through artistic restraint in a moment of tremendous grief. Her performance feels so intimately real primarily because of the emotional fragility she captures with her vocal decision, one that is exceptionally difficult to maintain throughout the runtime of a film. I consider this to be one of Portman’s greatest performances, vocally or generally.

8. Heath Ledger - The Dark Knight (2008)

Directed by Christopher Nolan

Heath Ledger’s towering transformation as the Joker in The Dark Knight wasn’t just visual. His vocal choices were radically unfamiliar and extremely menacing. While Ledger didn’t entirely abandon the theatrical flamboyance of the character, he brought an unsettlingly intimate quality to his voice. Throughout the film, the Joker’s voice mirrors his chaotic philosophy and puzzlingly specific worldview. Heath Ledger didn’t stick to a single vocal tone. In fact, even within a scene, he transformed his voice to amplify his inner penchant for mayhem that defined his unpredictability.

9. Frances McDormand - Fargo (1996)

Directed by Joel & Ethan Coen

McDormand’s Minnesota accent is full of “yahs” and elongated vowels, but beyond its comedic effects is a hint of her sharp intellect. Not once in the film does McDormand’s vocal decision appear to us as a mockery of an accent. She embodies a Minnesota police officer by first coming across as a woman who was born and raised in the state. Every time she says “Oh yah?” McDormand may make us laugh, but she also reminds us of her authority and her constantly ticking mind.

Final Thoughts

Each of these performances reminds us that the voice of a character isn’t just an actor’s own voice; it’s a carefully calculated and practiced decision. Many of these choices are bold, and if they didn’t come through, they could have thrown the film off the rails. But it is exactly this kind of bravery that makes acting performances live long in our memory.

What is an acting performance you remember primarily for the character’s voice? Tell us in the comments.