Advertising music: the jingles we never forget
In short: sound bypasses our attention — you can close your eyes, not your ears. Four notes were enough for France’s national railway (SNCF) to build a sound logo recognised by 98% of French people. The discipline has moved from the sung jingle to measured sonic branding.
Why ad music sticks in your head
- Brevity: two to four notes are enough — the shorter it is, the easier to replay mentally.
- Repetition: heard hundreds of times, always at the same moment, the motif becomes a reflex.
- Emotion: a melody links the brand to a feeling faster than any argument.
The textbook case: the SNCF’s four notes
In 2004, the SNCF entrusted its audio identity to the agency Sixième Son (a French sonic-branding pioneer founded by Michaël Boumendil). The result: a four-note sound logo — do, sol, la, mi — played in every station before announcements. Crucially, the motif has been modernised several times (2005, 2009, 2013) without ever changing the four notes.
Figures (source: Sixième Son): 98% of French people recognise the jingle, 94% correctly link it to the SNCF, 81% say they feel “attached” to it. The agency claims 120+ brands worked with (Cartier, Michelin…).
Before / After: from sung jingle to audio identity
| Before (sung jingle) | After (sonic branding, 2026) | |
|---|---|---|
| Form | A line set to music, with lyrics | Short sound logo, no lyrics |
| Brand | Name sung (“Haribo c’est beau la vie”) | Motif applied everywhere, an audio charter |
| Channels | Radio, TV | Omnichannel: app, store, voice, TikTok |
| Management | By feel | Measured (recognition, attribution) |
The sung jingle hasn’t disappeared, but it has been joined by a more strategic discipline: audio identity, designed as a logo you listen to. In the age of smart speakers and sound-first TikTok, sounding right is once again a competitive edge.
What it teaches brands in 2026
- Invest in sound, not just image (voice, short formats).
- Short and stable: a few notes kept intact over time.
- Measure it: recognition, attribution and attachment are managed like the rest of the brand.
- Cover every touchpoint: station, app, Reel, smart speaker.
FAQ
Who composed the SNCF jingle? Its audio identity was created from 2004 by the agency Sixième Son (founded by Michaël Boumendil). The logo is built on four notes (do, sol, la, mi), kept through updates.
Difference between a jingle and an audio identity? A jingle is a short melody, often sung with the brand name. An audio identity (sonic branding) is a broader approach: a system of consistent sounds applied across every touchpoint.
Why does sound matter in advertising today? With podcasts, voice assistants and short videos where sound is central, a recognisable audio signature allows instant identification.
Sources
- Sixième Son — SNCF sonic identity: https://www.sixiemeson.com/our-work/sonic-branding/sncf-sonic-identity/
- Europe 1 — where the SNCF jingle comes from: https://www.europe1.fr/societe/mais-dou-vient-lemblematique-jingle-de-la-sncf-4012759
PubliCité France — Before/After section. Figures: source Sixième Son. French version: /avant-apres/musiques-de-pub-jingles/