Ethel Cain Sings Entirely in Middle English in Robert Eggers’ Werwulf, and She Learned It in Practically One Session

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Ethel Cain performing at the Mojave Tent during the 2026 Coachella Valley Music and Arts Festival

Ethel Cain sings entirely in Middle English on “Wynter Waxeth,” the original song for Robert Eggers’ werewolf film Werwulf, and she learned the pronunciation with Eggers’ help in practically a single session.

Eggers worked with two Oxford professors on the Middle English dialogue in Werwulf, then with a dialect coach on tempering the pronunciation so modern audiences could understand it. The song, sung entirely in Middle English, was released Nov. 13, and Werwulf opens in U.S. theaters Dec. 25.

The track was co-written by Cain, Eggers and composer Robin Carolan, who produced it with Cain. Carolan also scored Eggers’ The Northman and Nosferatu, and after hearing Cain’s Perverts, he began imagining her voice in the werewolf film.

Ethel Cain and Robert Eggers
Ethel Cain and Robert Eggers. Photo by Arturo Holmes / Rory Mulvey / Getty Images.

Cain started writing with an instrument she’d just discovered. “Robin sent me a bunch of old medieval music at the beginning and was very into the psaltery, which introduced me to the traditional instrument. I bought one online and wound up plucking out this simple little harp line on it and that’s where the song began,” she said.

That psaltery line became a harp part as Carolan expanded her demo. He and Cain consulted Eggers on the language so the words would fit both the period and the story. Eggers has said Werwulf takes place in England around 1300.

Aaron Taylor-Johnson plays a cursed farmer seeking salvation through love, with Lily-Rose Depp as his wife. The song’s lyrics dwell on lost grace, sin, kin and blood. Carolan said he shaped its sound around “the family bond, the curse and the mysticism.”

Aaron Taylor-Johnson stars as Man in director Robert Eggers’ WERWULF, a FOCUS FEATURES release.
Aaron Taylor-Johnson plays the lead role in Robert Eggers’ WERWULF, a Focus Features release. Photo by Rory Mulvey.

“It’s always been my dream to score a horror film in some way, and I couldn’t think of a more perfect first opportunity than getting to work with Rob and Robin on a song for Werwulf,” Cain said.

The song ends: “My soule / My kin / My blod / My worlde.”

Aaron Taylor-Johnson stars as Man in director Robert Eggers’ WERWULF, a FOCUS FEATURES release.
Aaron Taylor-Johnson plays the lead role in Robert Eggers’ WERWULF, a Focus Features release. Photo by Rory Mulvey.
2026 Coachella Valley Music And Arts Festival - Weekend 2 - Day 1
Draped in a sweeping black gown with a feathered train, Ethel Cain thrusts a microphone skyward while performing at the Mojave Tent during Coachella 2026 on April 17 in Indio, California. Photo by Arturo Holmes / Getty Images.
Christian Dior - Photocall - Paris Fashion Week - Haute Couture Fall/Winter 2026/2027
Ethel Cain poses in a ruffled houndstooth coat, white blouse, and wide-leg jeans at the Christian Dior Haute Couture Fall/Winter 2026 show during Paris Fashion Week on July 6, 2026. Photo by Arnold Jerocki / Getty Images.
Aaron Taylor-Johnson stars as Man and Lily-Rose Depp as Woman in director Robert Eggers’ WERWULF, a FOCUS FEATURES release.
Aaron Taylor-Johnson and Lily-Rose Depp huddle together in a dimly lit, medieval-looking scene from Robert Eggers’ Werwulf. Courtesy of Focus Features.
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January Nelson is a writer, editor, and dreamer. She writes about astrology, games, love, relationships, and entertainment. Her favorite horror movies tend to be more on the artsy side.