Here’s what the app sounds like "anti-Lukaku": the solution to stop the whistles

On social media, Inter fans are organizing themselves through an app, Whistle, which reproduces the sound of various whistles to welcome former Romelu Lukaku. The sound is not as high-pitched as that of a real whistle, but the noise is still noticeable. (Service by Michela Cuppini and Andrea Ramazzotti)