Ondes Martenot in 'Ghostbusters'

You've heard the ondes martenot without knowing it — it's the eerie, voice-like wail threading through *Ghostbusters*' supernatural moments. Invented in 1928, it creates sound by blending two high-frequency radio tones, producing everything from smooth, ghostly slides to harsher tones. Composer Elmer Bernstein paired it with Yamaha DX-7 synthesizers, while performer Cynthia Millar recorded her parts at Abbey Road Studios. Keep scrolling and you'll uncover just how deep this strange instrument's fingerprints go on the film.

Key Takeaways

• The ondes martenot anchors the supernatural atmosphere of Ghostbusters, appearing in key cues like "Library and Title," "Fridge," and "Zool."
• Cynthia Millar performed the ondes martenot on the 1984 score, recorded at Abbey Road Studios, and was imported due to the rarity of skilled players.
• The instrument was paired with three Yamaha DX-7 synthesizers, creating layered textures throughout the Ghostbusters score.
• Its continuous pitch control and ghostly glissandi made it ideal for both unsettling supernatural moments and tender romantic scenes.
• The complete Ghostbusters score featuring the ondes martenot was officially released in March 2006 through Varese Sarabande.

What Is the Ondes Martenot and How Does It Create That Sound?

The ondes martenot is an electronic musical instrument that French inventor Maurice Martenot introduced in 1928, drawing inspiration from the oscillating radio tones he'd heard while serving as a cellist and radio operator during World War I. It's a monophonic instrument, meaning it produces one note at a time.

Its sound emerges through heterodyne synthesis, where two supersonic radio tube frequencies interact to generate an audible difference tone. You can think of it as two high frequencies canceling each other down to something you can actually hear. Filtering harmonics then shapes the timbre, producing everything from smooth, sine-wave tones to harsher sawtooth waves.

The instrument's expressive electronic vibrato and continuous pitch control give it that distinctive, almost human-voice-like quality you'll recognize immediately in Ghostbusters. Composers like Arthur Honegger and Darius Milhaud wrote works specifically featuring the instrument, cementing its place in serious musical repertoire. Its orchestral presence reached a landmark moment through Olivier Messiaen's Turangalîla-symphonie in 1949, a sweeping work that remains one of the most celebrated compositions ever written for the instrument. Much like the terracotta warriors discovered in China, whose every soldier has unique facial features, the ondes martenot's capacity for individualized tonal expression set it apart as a landmark achievement in its own field.

How Elmer Bernstein Used the Ondes Martenot to Score Ghostbusters

Knowing how the ondes martenot produces its eerie, voice-like tones makes it easier to understand why Elmer Bernstein reached for it when scoring Ghostbusters. He paired the instrument with three Yamaha DX-7 synthesizers, letting its ondes texture anchor the supernatural atmosphere throughout the film. Because skilled performers were so rare, Bernstein imported a player from England specifically for the sessions.

His leitmotif placement was deliberate. You'll hear the instrument's wavering lines in cues like "Library and Title," "Fridge," and "Zool," where ghostly encounters demanded something unsettling yet musical. He also used it more tenderly in Dana Barrett and Peter Venkman's romantic scenes. Played in octaves alongside violin and cello, the ondes martenot became the score's defining supernatural voice.

Bernstein's affinity for the instrument extended well beyond Ghostbusters, as he returned to it for later films including The Black Cauldron, The Good Son, and My Left Foot. The full score, featuring the ondes martenot prominently across all 31 tracks, was not released until March 2006 through Varese Sarabande.

The Ghostbusters Scenes Where You Can Actually Hear It

Listen for it here:

• Library Basement: It signals the ghostly encounter as the Ghostbusters descend, accompanying the "no human being" line.
• Apartment Fridge: It layers over Dana's refrigerator scene, pairing with synthesizers as eggs cook and growls emerge.
• Dana's Theme: It weaves through romantic and supernatural cues alike, appearing in "Meeting," "Date," and the climactic "Finish."

You'll notice the instrument shifts between delicate romance and creeping dread, making it essential to how Bernstein builds the film's supernatural atmosphere. Its signature quavering, sustained pitches are drawn from whole-tone scale 1, the same harmonic language underpinning the film's primary supernatural theme. Bernstein's use of the ondes Martenot reflects his broader career versatility, having worked across genres from horror-tinged work like An American Werewolf in London to sweeping epics like The Magnificent Seven. Much like architects and artists who employed the Golden Ratio for centuries to evoke a sense of harmony and order, Bernstein's deliberate tonal choices give the score an underlying structure that feels both mathematically precise and emotionally resonant.

Meet Cynthia Millar, the Musician Who Brought the Ondes Martenot to Ghostbusters

Behind that haunting sound weaving through Dana's refrigerator and the library basement is one musician: Cynthia Millar. She's the premier female virtuoso of the ondes Martenot, commanding an instrument spanning six octaves with extraordinary precision.

Composer Elmer Bernstein personally encouraged Millar to master the ondes Martenot for film work, launching a partnership that produced scores for The Black Cauldron, My Left Foot, and The Good Son. She recorded the original 1984 Ghostbusters score at Abbey Road Studios. For Ghostbusters: Afterlife, the ondes Martenot was recorded one full octave lower than in the original film, a specific creative choice made at Jason Reitman's request.

Her cinematic legacy didn't stop there. Composer Rob Simonsen recruited her for Ghostbusters: Afterlife, where she recorded remotely from London, and she returned again for Frozen Empire. The score for Ghostbusters: Frozen Empire was composed by Dario Marianelli. Millar remains the living connection between the franchise's iconic original sound and its modern installments.

How Ghostbusters Helped Cement the Ondes Martenot as Horror Cinema's Go-To Instrument

Post-*Ghostbusters*, composers doubled down:

• Danny Elfman used it in Mars Attacks!(1996) for sci-fi horror effects
• It replaced the theremin where control precision mattered most
• It appeared across 100+ film soundtracks, cementing horror credentials

The Ondes Martenot generates its haunting sounds through the use of oscillators, making it a uniquely versatile electronic instrument for composers seeking eerie, otherworldly tones.

The New York Timesdescribed its sound as a "haunting wail" — and Ghostbusters made sure you'd never forget why.

The instrument was invented by Maurice Martenot, a French musician who designed it to produce electric pulses by oscillating radio tubes to reach two distinct frequencies.