50% of every photo and video taken at a concert is of a stranger’s back. The other 50% is the stage. Hellmann’s and Ogilvy Argentina looked at that statistic and saw not a problem but an untapped media format, one that already existed inside every live event, had never been sold to an advertiser, and reached exactly the audience the brand needed to reach.
The Festival
Cosquín Rock is Argentina’s largest rock festival, held annually in the province of Córdoba, drawing hundreds of thousands of fans across multiple days. It is one of the most attended live music events in Latin America. The kind of concert where a shorter person spends the entire show looking at the back of the person in front of them, no matter which way they turn.
Hellmann’s and Ogilvy Argentina, in collaboration with production company Oruga Cine, arrived at Cosquín Rock in April 2026 with a mechanic built from that observation.
The Mechanic
The activation divided the festival audience into two roles, both rewarded, both connected to the brand.
Tall attendees were invited to become Hellmann’s “backs.” They were given a branded T-shirt carrying a Hellmann’s advertising design and asked to wear it throughout the festival. In exchange, they received flavour: free Hellmann’s products to eat and use across the event. Their backs became the medium. Their height made them the most visible people in every crowd.
Shorter attendees, the ones who regularly spent concerts staring at the back of someone taller, were given a different reward. When they captured and shared the content of the branded backs in front of them, they received their own reward for the content. Their frustration with their view became the campaign’s distribution mechanism. They were creating the content Hellmann’s needed while getting something in return for doing it.
Malu Donaire, CCO of Ogilvy Latina Sur, described the insight that shaped the idea: “50% of the pictures and videos we have from concerts are of a stranger’s back, and the other 50% is the stage. With Tasty Backs, we wanted to leverage this space that had never been used before and propose an experience where everyone benefited.”
Why It Works
Concert advertising typically happens on screens, banners, stage backdrops, and merchandise stalls. All of it competes with the act on stage for attention. The Hellmann’s back is not competing with the stage. It is standing between the viewer and the stage, in the exact sightline that cannot be avoided.
Renzo Tapia, Creative Director at Ogilvy Argentina, described what happened on the ground: “We managed to get the attendees to accept the challenge of putting Hellmann’s advertisement on their backs and becoming brand ambassadors for thousands of people. The campaign not only established a new communication medium with the public, but we also wanted it to enrich the concert experience for all attendees.”
The campaign is also the clearest expression of a strategic shift Hellmann’s has been making in Argentina for over two years. Cecilia Peña, Condiments Marketing Manager Argentina at Unilever, described it: “In Hellmann’s, we have been driving a profound transformation in how we communicate: we stopped being just a brand that talks about products to become a brand that gets involved in culture. Being at Cosquín Rock with an idea that breaks traditional formats, like using backs as another medium, reflects exactly that: daring to go beyond limits and connect with people from unexpected places.”
The Specificity of the Medium
What makes Tasty Backs structurally interesting is that it created a media format that did not exist before the campaign, and that could not exist outside a live event context. A tall person wearing a branded T-shirt in a supermarket is a person in a branded T-shirt. A tall person wearing a branded T-shirt at a music festival, surrounded by thousands of people who are photographing and filming everything and everyone around them, is a media placement that generates its own organic distribution. The context turns the shirt into content. The content generates reach. The reach did not require a media buy.
Campaign Name: Tasty Backs
Agency Name: Ogilvy Argentina / Production: Oruga Cine / Director: Federico Russo
Brand Name: Hellmann’s / Unilever Argentina
Location: Cosquín Rock Festival, Córdoba, Argentina
