Does music actually affect retail sales, or is it a myth?

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 moved noticeably slower through the store. That extra time meant more products noticed, more in the cart, and about $4,600 more in daily sales: $16,700 on slow days against $12,100 on fast. Shoppers asked on the way out mostly could not say what had been playing. They couldn't even say whether music had been playing. The music wasn't persuading anyone. It was adjusting their internal clock.

What the effect sizes actually look like

Restaurants show the same scale. A field experiment in Perceptual and Motor Skills had a restaurant simply turn the volume down. Not the genre, not the tempo. Softer. The average check rose about $35 a head, roughly 15 percent, pure revenue from a volume knob. A study in the Journal of Consumer Research found slow tempo kept diners 11 minutes longer, which turned into more rounds ordered and roughly 40 percent more bar revenue, while food bills stayed flat. Set those next to the supermarket's $4,600 a day and the range comes into focus: when the effect shows up, it shows up in double digits.

Every one of those figures comes from people buying more or staying longer. There's a second path, where the transaction count holds flat and the average ticket rises because the music shifts which version of the thing people reach for. That research gets its own note: can the right music make customers pay more?

The study that disagrees

If that were the whole story, every store would pipe in slow jazz and call it a day. A 2025 conference paper from VU Amsterdam, looking at about 140 Dutch stores, found the overall tempo effect came back near zero, with real sales tied to actual transactions. Slow music did not reliably raise sales across those stores. The 1982 finding that launched an industry didn't hold up 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 and Consumer Services 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.

This is one piece of a larger question. Most of these numbers run through time on the floor, covered in what is dwell time, and why does it predict sales? The full field guide to store music and customer behavior lays the research out in order.