Sonic Branding, Audio Branding and Sonic Logos.

The vocabulary in this field is genuinely muddled, partly because agencies have an incentive to make their own preferred term sound like the biggest one. It is simpler than the marketing suggests. The three terms nest inside each other.

Audio branding is the outermost: every sound a brand deliberately makes. Campaign music, the voice in the ad, hold music, the sound a product makes when it starts up, the playlist in the shop. It is a strategy question before it is a sound question.

Sonic branding is the disciplined core of that — the specific, owned, repeatable set of sonic assets that identify the brand the way a wordmark does. The test is ownership and repetition: if it changes every campaign, it is advertising music, not sonic branding.

A sonic logo, sometimes called an audio mnemonic, is a single asset inside a sonic identity. One to three seconds, usually at the end of the spot. It is the most visible piece and the smallest.

The reason to get the terms straight is that they map to very different pieces of work, and briefs regularly ask for one while describing another.

If the requirement is a single campaign that needs to feel like the brand, that is advertising music. It is scoped per campaign, it is designed to serve one story, and it is right for it to change next year. Commissioning a full identity system for a campaign is over-buying, and the system will not survive the campaign anyway.

If the requirement is that the audience recognises the brand from three seconds of audio with no logo on screen — in a podcast read, a radio spot, an app, a voice assistant — that is a sonic identity. It only works through repetition, which means the commitment is measured in years, not in one flight. A brand that rebuilds its sound every campaign never gets the recognition it paid for.

The commonest expensive mistake is buying a sonic logo without the system underneath it. The mnemonic exists, nobody has written down what it is derived from or how it is applied, so every agency that touches the brand afterwards reinterprets it. Three years later there are six versions and no recognition.

Most numbers quoted in this field come from companies selling the service, which is a reason to be careful rather than a reason to dismiss them. The most defensible published figure comes from Kantar's BrandZ work, and its exact scope matters: brands with strong BRAND ASSETS show 76% higher brand power and 138% higher perceptions of advertising strength. Sonic is one asset category inside that measure, alongside colour, logo, character and the rest.

So the honest reading is not “a sonic logo delivers 76% more brand power”. It is that distinctive assets, consistently applied, are worth a great deal — and that sound is one of the few a brand can still own outright, because it is the one most competitors have not bothered to build.

⚠️ Market-size figures for sonic branding should be treated with more suspicion than that. Two commissioned reports covering the same year differ by roughly a factor of two, which is a sign that nobody is measuring the same thing. This page cites none of them.

The argument for commissioning a sonic identity does not rest on a statistic anyway. It rests on where audio now plays: podcast reads, skippable pre-roll, voice assistants, apps and in-store — surfaces where there is frequently no logo on screen at all, and where an audience either recognises a brand by ear or does not recognise it.

A jingle is sung, carries lyrics, and usually states the brand or the proposition in words. A sonic logo generally does not — it is instrumental, and it identifies without explaining. The two are often set against each other as old and new, which is mostly a sales argument rather than a technical distinction.

In practice the choice is about how the audience meets the brand. Where the audio has to do the whole job with no picture, and where the proposition is simple and needs stating, a sung line still outperforms an abstract mnemonic. Where the audio sits under a picture that already carries the message, a mnemonic is cleaner and ages better.