Does music actually affect retail sales, or is it a myth?
In 1982 one variable moved sales 38 percent. The largest study ever run found no overall effect. The problem with that contradiction is more interesting than either number.
In 1982, a researcher changed nothing in a supermarket except the music, and sales went up 38 percent. Almost $2 million a year for that store, from one variable. Before anyone starts blasting lo-fi in the aisles, that number has a problem, and the problem is more interesting than the statistic.
The study that started it
The experiment ran nine weeks, published in the Journal of Marketing, rotating three conditions: no music, slow tempo around 60 beats per minute, and fast around 108. With slow music, shoppers literally walked slower, about 19 seconds slower per aisle. That extra time meant more products noticed, more in the cart, and about $4,600 more in daily sales. The researcher interviewed over 200 shoppers afterward. None had noticed. They couldn't even say whether music had been playing. The music wasn't persuading anyone. It was adjusting their internal clock.
The study that disagrees
If that were the whole story, every store would pipe in slow jazz and call it a day. In 2025, a team at the University of Amsterdam ran the largest music-and-retail experiment ever, 140 stores, six weeks, real sales tied to actual transactions. The headline: no overall effect. Slow music did not reliably raise sales across 140 stores. The 1982 finding that launched an industry didn't replicate at scale. But segment the data and a pattern appears. Slow music did increase spending among loyalty members, the engaged customers already paying attention to the environment. Casual shoppers, no response. The effect is real. It just isn't universal. It depends on who's in the store.
Music versus silence is settled
So what's going on underneath? A 2012 study in the Journal of Retailing tracked 550 consumers across two stores in Sweden and tested the most basic question, music versus silence. Any music at all added about eight minutes of dwell time and more spending than silence. That part is not in dispute.
The mechanism is emotional
Why it works is the useful part. A 1994 study in the Journal of Retailing measured shoppers' emotional state five minutes into a trip and found the pleasure at that mark predicted how much they overspent, beyond what they'd planned. A follow-up in Psychology and Marketing confirmed it. The path from environment to purchase runs through emotion. Impulse buying is an emotional event, not a calculated one, and music is one of the most direct levers on that emotion.
The honest answer
Three things the research supports. Playing music is table stakes, and silence leaves the easy eight minutes of dwell on the floor. The simple prescriptions don't hold, "just play slow music" fell apart across 140 stores. And the mechanism is emotional, set in the first five minutes, not rational. Music affects sales. The difference isn't whether you play it. It's whether you got the how right.