In the modern marketing suite, few concepts are as revered as Share of Voice (SOV). Spend ten minutes with a media director, and you will be presented with an airtight, granular calculation of SOV, a rigorous tracker against Share of Market (SOM), and a multi-quarter growth forecast. The math is sophisticated, the accountability is weekly, and the discipline is absolute.
Yet, there is a glaring, expensive, and largely ignored disconnect in this boardroom rigor. While media planners treat SOV as a strategic lever for market expansion, the actual "voice" of the brand—the music and sonic identity that accompanies these high-priced placements—is treated as a decorative afterthought. This professional schizophrenia, where media is planned with surgical precision but sound is selected based on fleeting, subjective instinct, represents one of the most significant and avoidable fiscal leaks in the marketing industry today.
The Evolution of the SOV Framework
To understand why this gap exists, we must look at the foundation of modern brand strategy. The current industry standard rests on the work of John Philip Jones, who in 1990 articulated the relationship between media weight and market share in the Harvard Business Review. This was later refined by Les Binet and Peter Field through their exhaustive analysis of the IPA Databank.
The central premise—that brands whose SOV exceeds their SOM (ESOV) tend to grow—became the bedrock of brand defense in boardrooms worldwide. The rule of thumb suggests that for every ten points of positive ESOV, a brand can expect roughly half a percentage point of annual market share growth, assuming creative effectiveness acts as the necessary multiplier.
This framework successfully turned marketing into a defensible science. It provided a clear, quantitative roadmap for budget allocation. However, the framework left a massive blind spot: the actual audio. While the industry mastered the "voice" of the media buy (where to place it, how much to spend, how often to rotate), it failed to define the "voice" of the content. Music, the most emotionally potent component of a brand’s presence, remains locked in the realm of "vibes" and "taste," shielded from the very metrics that govern the rest of the campaign.
The Macro-Shift: Why Audio is No Longer "Wallpaper"
The argument that music is merely background noise for visual content is no longer supported by current consumer behavior. The "Sound-On" era has arrived, and the data is unequivocal. According to Spotify’s 2026 Sound-On Era report, 92% of US consumers report stopping other online activities specifically to stream audio, and 87% will actively silence videos on other platforms to favor audio-first experiences.
Furthermore, the trust dividend is measurable. Consumers are 36% more likely to trust music or podcast ads compared to traditional social media advertising. Even more telling are the findings from LinkedIn’s marketing mix modeling, as reported by Hilary Batsel, which indicate a 4x to 8x return on investment (ROI) on incremental revenue from audio integration.
If the medium of audio is demonstrably high-performing, why does the "content" of that audio remain unmanaged? Tammy Henault, a veteran CMO who has led marketing for the NBA, Paramount+, and the New York Times, captures the problem perfectly: "Brands need to stop thinking about audio as a bolt-on, and start thinking about it as a foundational element to their plan." When audio is treated as foundational, the music ceases to be wallpaper; it becomes a core business asset.
The Cost of Disconnected Sonic Identity
The logic of ESOV relies entirely on the assumption of mental availability. For a brand to benefit from its media spend, it must be instantly recognizable. We invest heavily in visual identity—consistent logos, specific palettes, and rigid typography—to ensure that the consumer knows who is speaking at every touchpoint.
Music, however, suffers from a lack of "sonic continuity." A typical brand’s annual output is a chaotic collage: acoustic folk for a holiday spot, aggressive electronic textures for a product launch, and generic library cues for social media filler. While each track may be professionally produced and "felt right" to a Creative Director in a closed room, they fail to create a cohesive sonic signature.
When a brand buys massive share of voice but populates those impressions with a disconnected, incoherent soundscape, it is effectively paying a premium to confuse its audience. The compounding effect of brand recognition—the very thing ESOV is meant to cultivate—leaks out through the speakers. The brand is spending money to be present, but it is failing to be identifiable.
Measuring the Immeasurable: The Rise of mDNA
The common industry pushback is that music is too subjective to be "gridded." Critics argue that music is emotional and contextual, and thus resists the cold categorization of a brand style guide.
This argument is flawed. We do not "grid" color palettes, yet we define them with high-precision hex codes and ensure they are used consistently across every global asset. Music is no different. It possesses measurable, objective properties: tempo, key, harmonic palette, instrumentation, rhythmic feel, and production register.
By applying these parameters, brands can develop what some call "mDNA"—a defined set of attributes that acts as a blueprint for the brand’s sound. This is not about restricting creativity; it is about providing a boundary within which creativity can thrive.
The Four Pillars of mDNA
- Killing Taste Arbitration: By defining the parameters of a brand’s sound, companies eliminate the "I like this track/I don’t like this track" circular arguments that plague production meetings. The conversation shifts to: "Does this track fit our defined sonic DNA?"
- Portability of the Brief: A reference track in a brief often leads to legal imitation or brand dilution. A parameter-based brief travels across borders, allowing local agencies to create original, on-brand work that sounds cohesive regardless of the market.
- Pre-Spend Testability: Because the sound is defined by parameters rather than gut feeling, music can be tested against campaign objectives before the media spend is fully committed, mirroring the rigorous testing processes already in place for visual creative.
- Visibility of Drift: An mDNA system allows a brand to conduct an audit of its sonic consistency. If a campaign deviates too far from the established sound, the system flags the drift, allowing leadership to understand where their brand identity is being compromised.
Structural Implications: Moving Music Upstream
To solve this, organizations must rethink their decision architecture. Currently, the music brief arrives after the script is locked and the edit is nearing completion. At this stage, the role of music is reduced to a "finishing touch."
To transform music into a strategic asset, the brief must be moved upstream. By defining the role of sound at the storyboard phase, music becomes a structural element of the campaign’s narrative architecture.
Furthermore, brands must establish a feedback loop. After a campaign concludes, the music should be evaluated alongside the performance metrics. Did the sound contribute to brand-linked memory? Did it increase recall? By treating these data points as a private, evolving benchmark, a brand turns its music into an asset that compounds in value over time, rather than a recurring cost that resets to zero every time a new creative team is hired.
Conclusion: The Economic Argument for Sound
The asymmetry between how brands manage their media spend and how they manage their audio presence is no longer defensible. We are in a climate where every dollar of marketing spend is scrutinized, yet the most emotionally efficient asset in the arsenal—music—is left to the mercy of individual preference.
Closing the gap does not require a new department or a radical overhaul of the marketing function. It requires the application of existing, proven standards to sound. It requires treating the brand’s sonic identity with the same respect, rigor, and strategic intent that the industry currently applies to its media mix.
For the modern CMO, the goal is clear: stop buying share of voice at a markup while the brand’s identity leaks through the speakers. By formalizing the brand’s sound, companies can ensure that every impression purchased is an investment in long-term mental availability. It is a slow, structural shift, but in a saturated media environment, it is the only way to ensure that when a brand speaks, the audience doesn’t just hear it—they recognize it.
About the Author
