TikTok's 'Jessie' will now soothe you to sleep

Calm just released its newest Sleep Story, "Once Upon A TikTok Tale."
 By 
Anna Iovine
 on 
screenshot of Calm app and Once Upon A TikTok Tale screen
TikTok's "Jessie" now voices a new Calm Sleep Story: "Once Upon A TikTok Tale." Credit: Calm

If you're on TikTok, you've heard the voice of Kat Callaghan, aka "Jessie" — the text-to-speech audio on the app.

Callaghan, a radio host and voice artist known as @voiceofkat on social media, revealed that she is effectively the voice of TikTok last year:

Now, Callaghan is taking her voice talents to the meditation and sleep app Calm for a story called, "Once Upon A TikTok Tale."

screenshot of Once Upon A TikTok Tale on Calm app
Fall to sleep with a dreamy story narrated by TikTok's "Jessie." Credit: Calm

Calm users know that the app uses popular voices to create sleepy stories — like Harry Styles' Calm story several years ago. Callaghan herself is a big fan of Calm, she told Mashable, and mentioned the app on her Canadian radio show before. While some people may be surprised by the collaboration, fans of her TikTok work tell Callaghan that they find her (robotic) voice soothing and relaxing — which is perfect for falling asleep.

"Once Upon A TikTok Tale" will take listeners to a series of dreamy locations based on popular TikTok genres, according to the press release. The story also uses lo-fi beats, ASMR, and a trippy sequence to help you drift off to sleep.

The Sleep Story will start with the familiar Jessie voice. "You'll hear Jessie," Callaghan said, "in a bit of a different way." When heard on TikTok, Jessie is fast and full of energy. The Calm story will feature "definitely recognizable Jessie, but slowed down a little bit," she said. As the recording continues, Jessie will transition into Callaghan's usual voice in a calm, soothing way.

"This is really the first project I've ever done where I've been able to combine me and my alter ego," Callaghan continued.

Listen to a sample of "Once Upon A TikTok Tale" here:

Topics TikTok

anna iovine, a white woman with curly chin-length brown hair, smiles at the camera
Anna Iovine
Associate Editor, Features

Anna Iovine is the associate editor of features at Mashable. Previously, as the sex and relationships reporter, she covered topics ranging from dating apps to pelvic pain. Before Mashable, Anna was a social editor at VICE and freelanced for publications such as Slate and the Columbia Journalism Review. Follow her on Bluesky.

Mashable Potato

Recommended For You
The Soundcore Sleep A30 Special earbuds are the best sleep earbuds available now
lilac sleep a30 special earbuds on light blue comforter in front of dark blue pillow

How to sleep better: 7 products for a good night's sleep
 A red light bulb, Hatch Restore 3, Soundcore Sleep A30 earbuds, and Whoop on a gradient background

Sleep Week 2026: The best deals on new mattress, fresh pillows, sleep earbuds, and more
a purple harmony pillow, anker soundcore sleep A30 earbuds, hatch restore 3 alarm clock, and zinus mattress on a coral and purple colored background

Jessie Buckley's Golden Globes speech is a moving watch
Jessie Buckley at the 83rd Annual Golden Globes held at The Beverly Hilton


Trending on Mashable
NYT Connections hints today: Clues, answers for April 4, 2026
Connections game on a smartphone

Wordle today: Answer, hints for April 4, 2026
Wordle game on a smartphone

NYT Connections hints today: Clues, answers for April 3, 2026
Connections game on a smartphone

NYT Strands hints, answers for April 4, 2026
A game being played on a smartphone.

The quirky stuff NASA packed in the Orion spaceship for Artemis II
Rise floating in microgravity with the Artemis II crew
The biggest stories of the day delivered to your inbox.
These newsletters may contain advertising, deals, or affiliate links. By clicking Subscribe, you confirm you are 16+ and agree to our Terms of Use and Privacy Policy.
Thanks for signing up. See you at your inbox!