343.4 m/s, the speed of sound in air, gives its name to the SPAZIOMENSA format, which explores the contemporary soundscape. Hosted by TeatroLoSpazio, the format brings together live performances, sonic explorations, and interdisciplinary dialogues to investigate the power of sound as a universal language and a creative force. Among artists, musicians, sound designers, and sound philosophers, the aim is to understand how sound moves through and shapes our lives, our spaces, and our sensations. From the symphony to the asymmetry of noise, from melody to chaos, each event is an opportunity to discover the interaction between technology, creativity, and acoustic perception, creating an immersive experience that stimulates active listening and reflection. 343.4 m/s is not just a format but an invitation to reconsider the world around us, listening with fresh ears to what we often take for granted. Reptilian Expo is the moniker of Riccardo Patrone, head of the multiform fantasy tape label Pampsychia and experienced dancefloor shapeshifter. Multifaceted selector and producer, Reptilian Expo is presenting a new live set featuring unreleased (sung) songs and deep narrative explorations, intertwining storytelling and songwriting that delve into personal and collective unconscious realms, weaving a common thread among his distinctive fifth world scenarios, the mystical immersive soundscapes, the rhythm-laden grooves and more bouncy, off-kilter weirdo beats. Xaxer From the Ecuadorian Andes, through the sounds of experimental club music, Xaxer explores the alien shadows of latin bass. Moving through mutant DJ sets, they play between complementary opposites, creating an immersive and visceral flow. 42 Cent Hotline is the musical project of Francesco Cammarata, a Sicilian composer and multimedia artist. His sound palette ranges from experimental electronics to folk music, from field recording to the dreamy atmospheres of Vaporwave, crafting hybrid compositions that merge club music elements with a strong evocative component. His works are true sonic experiments, where organic and digital intertwine in a play of contrasts. LEONARDO METZ Leonardo Arneis Metz is an Italian-German electronic musician and sound engineer, born in 1999 in Tuscania and currently based in Rome. A graduate in Electronic Music from the Saint Louis College of Music, he is the founder and creative director of Hyperacustica and Malditerra Records, platforms through which he shares his musical projects and organizes events.