The music playing in the background while shoppers browse a store, diners scan a menu, or commuters ride an elevator is almost never an accident. Behind nearly every retail playlist, restaurant soundtrack, and hotel lobby loop sits a body of research, a sound design strategy, and in many cases, a paid music consultancy. The science of how background music shapes consumer behavior has matured into a multi-billion-dollar industry, and the conclusions reached by researchers over the past four decades have grown specific enough that businesses now treat sound as a deliberate variable in revenue management.
What follows is a look at what the research says, how businesses apply it, and where the practice is heading as streaming platforms and AI-generated music reshape the cost structure of commercial sound design.
Tempo Changes How Fast People Move and Spend
One of the earliest and most-cited studies on background music was conducted by Ronald Milliman in 1982 and published in the Journal of Marketing. Milliman observed shoppers in a supermarket under three conditions: no music, slow-tempo music (under 72 beats per minute), and fast-tempo music (over 94 BPM). Shoppers under slow-tempo conditions moved 17% slower and spent 38% more.
A follow-up Milliman study in 1986, conducted in a restaurant setting, found that diners exposed to slow-tempo music stayed at their tables longer and ordered more from the bar, while fast-tempo conditions accelerated table turnover. The findings have been replicated in various forms since.
The practical applications are visible everywhere. Quick-service restaurants like McDonald’s and chain coffee shops typically use faster, upbeat playlists during peak hours to encourage table turnover, while upscale steakhouses and wine bars lean on slower jazz, classical, or downtempo programming to extend dwell time and increase bar spend. Grocery stores generally trend slow during weekday afternoons (when basket sizes matter) and pick up tempo during heavily trafficked weekend shopping windows.
Genre Signals Brand Identity and Shifts Product Choice
Research from the late 1990s and early 2000s extended the findings beyond tempo into genre. A 1999 study by Adrian North, David Hargreaves, and Jennifer McKendrick published in the Journal of Applied Psychology tracked wine sales in a UK supermarket. When French accordion music played, French wines outsold German wines by roughly five to one. When German Bierkeller music played, the ratio flipped. Critically, most shoppers in post-purchase interviews said they had not consciously noticed the music.
The study is now a fixture in marketing curricula because it demonstrated a measurable effect on product selection that operated below the threshold of conscious awareness. Subsequent research has extended the principle to perceived product quality, willingness to pay, and brand association.
How Brands Apply Genre Strategy
Apple Stores tend to program contemporary indie and alternative music that signals creative-class affinity. Abercrombie & Fitch, during its dominant 2000s and early 2010s period, ran club-volume electronic music as a deliberate filter to attract its target demographic and discourage parents from lingering. Whole Foods historically programmed organic-coded acoustic and global music that aligned with its premium positioning.
The relationship between music and perceived quality has been studied directly. A 2017 study published in the Journal of Retailing and Consumer Services found that customers in a wine store rated identical wines as higher quality when classical music played than when Top 40 music played.
The Volume and Lighting Variables
Music intensity also shapes consumer behavior. Research published in the Journal of Consumer Research by Nicolas Guéguen and colleagues found that bar patrons drank faster and ordered more when music volume increased from 72 decibels to 88 decibels. The mechanism appears to be a combination of reduced conversation and elevated arousal.
Sound interacts with lighting. Studies on multi-sensory marketing, sometimes grouped under the term “atmospherics,” a concept formalized by marketing scholar Philip Kotler in 1973, find that consistent sensory signaling, when music, lighting, and scent reinforce each other, produces stronger purchase intent than any single channel alone.
Workplace, Healthcare, and Mood Applications
Background music’s commercial applications extend beyond retail. Dentist offices, surgical waiting rooms, and physical therapy clinics use music to reduce perceived pain and anxiety. A 2015 meta-analysis published in The Lancet examined more than 70 studies and found that music played to patients before, during, or after surgery reduced anxiety, pain, and the need for pain medication.
In offices, the picture is mixed. Open-plan workspaces increasingly play ambient music or “lo-fi” loops to mask conversational noise, but research on whether music improves productivity for knowledge work depends heavily on the task. Music with lyrics tends to interfere with reading and writing tasks, while instrumental music can improve performance on repetitive or creative tasks.
The Commercial Music Industry Behind the Speakers
The companies that program commercial spaces operate at significant scale. Mood Media (the company behind Muzak, which it acquired in 2011) and PlayNetwork license music to more than 500,000 commercial locations globally. Soundtrack Your Brand, originally backed by Spotify, services restaurants and retail with curated playlists licensed for commercial use.
The licensing layer is essential. Streaming services like Spotify and Apple Music are licensed only for personal use; commercial playback requires separate agreements with performance rights organizations including ASCAP, BMI, and SESAC. Businesses caught playing consumer Spotify accounts in public spaces have faced enforcement actions and fines from rights organizations.
What Comes Next: AI-Generated Commercial Music
The newest frontier is AI-generated background music. Several startups now offer commercially licensed AI-composed tracks at a fraction of the licensing cost of human-composed catalog music. For chain businesses operating thousands of locations, the cost savings can be significant, though questions remain about whether AI-generated music produces the same atmospheric effects as human-composed work.
What does not appear to be in dispute, after four decades of research, is that the music playing in the background while a customer makes a purchase decision is doing real work. The only question is whether the business has chosen it deliberately.
