A logo is not a brand, but it has an important role to play in branding: it instantly represents the brand's character, introducing us if we're not acquainted or reminding us if we're old friends. A logo is like a photograph - not the real thing, but a good reminder. Logos have been so effective that every company has at least one - which is where the problems begin.



I call the problem ‘overmessaging'. Each of us now encounters a staggering 30,000 commercial messages every single day, and the vast majority of them are visual. This means that for the next few years at least, sonic logos – by which I mean short sonic mnemonics that are the exact audio counterparts of the visual logo – are going to be worth considering simply because they are relatively rare and can thus act as powerful differentiators. However there's more to sonic logos than curiosity value alone: well used, they can produce exceptional results. The also go back much further than you might think.

Sonic logos have actually been around for hundreds of years: street calling used to be the main way tradesmen advertised their services, as wonderfully romanticised in the film Oliver. It's only a few decades since that practice ended: I can remember the ‘rag-and-bone' man's mournful shout of “anyoldiron?” from my childhood in London. The modern-day equivalent is the ice cream van: just watch the cathartic effect of its chimes on surrounding buildings on a hot summer's day to see the potency of sonic logos deployed in the right place at the right time. Most ice cream chimes are generic, but in Sweden the Hemglass ice cream tune is a universally known and loved sonic brand.

As soon as the advertising industry got sound to play with, it saw the potential of memorable music/voice combinations and the jingle and tagline were born. The dividing line between jingle or a tagline an a sonic logo is blurred. In general, jingles and taglines come and go with campaigns and rarely live for more than a few years. Even the most memorable usually get retired. “For hands that do dishes…”; “It's the real thing”; these and many more once-mighty jingles or taglines are now languishing in retirement homes, though the brands are still very much with us today.

Some taglines have become sonic logos through sheer memorability. One in particular has outlasted entire generations of customers: Tony the tiger has been saying “they're gr-r-r-r-reat!” since 1951. This is probably the longest-running sonic logo in the world, and it has now outlived its voice-over artist. Thurl Ravenscroft voiced many Disney characters but Tony was his greatest achievement. He was Tony's voice for over 50 years until his death in 2005; today, Lee Marshall carries the baton.

Some of the most successful sonic logos have even been registered as trademarks: the MGM lion's roar and the old three-tone NBC chime are two examples.

These examples notwithstanding, it wasn't until the 1990s that sonic logos started to be taken really seriously and their use considered by many major brands. The sea change came with Intel. Its four-note sonic logo, composed by Austrian musician Walter Werzowa, has become one of the best-known sounds in the world, and has spearheaded Intel's extraordinary success as a brand – given that this is a product nobody ever sees and nobody ever buys.

Today, sonic logos are more in play then ever before. UK insurance giant Direct Line has a sprightly bugle call, which speaks volumes about urgency, assistance and playfulness in just three seconds. Apple has its comforting, uplifting start-up sound, engineered in 1991 by Jim Reekes and still shipping 16 years later. (It is inexplicable that the mighty Microsoft has never seen the value of a single start-up sound; the sound of Windows has changed with every successive version of the software, so that now there is no sound of Windows. They may be learning through: huge amounts of time and money were invested in ‘a language of sounds' for the Xbox 360.) Lufthansa has invested in a corporate sound, comprising four rising tones that are aimed to convey feelings of taking off and wellbeing. Siemens has recently added a seventh element to its branding: sound has now joined logo, claim, typeface, colours, layout and style as one of the basic building blocks of the Siemens brand. The company has created both an ‘audio signature' (aka a sonic logo) and also some mood sound as part of its new palette. Even political parties are joining in: Wales's Plaid Cymru has a short sonic logo to welcome you in peace and harmony to its website.

The evidence is that more and more major brands are creating a sonic logo as a matter of course. With the continuing rise of mobile devices (along with custom ring tones and downloaded digital sound) I believe we have not yet scratched the surface of the sonic logo.

Is it time your brand found its voice – before your competitors find theirs?