“Aperitivo Sonoro” is an interactive sound installation designed to increase the participants’ experience of an aperitif, a convivial habit that is gaining more and more importance all over the world. The interaction between the people and the aperitif counter is sonified through the use of contact microphones placed on the latter. The vibrations captured by these microphones are fed into granular synthesis algorithms to generate a soundscape of which people are the main authors, becoming themselves the performers.