First come the punk riffs from Maksim Cristan on his electric guitar, then the operatic vocals from his partner Daria Spada, a discordant but thrilling mix of old and new, classic and experimental. The balcony concert has begun. In the courtyard of an apartment building in the historic center of Turin, in northern Italy, an intergenerational crowd—from adolescents to pensioners—moves to the music. The atmosphere is festive and cathartic. Early in 2020 videos flew around the world of Italians coming out to sing on their balconies at the start of…