During our conversation, Carlos Medina walks around Coyoacán, a “folkloric” neighborhood in Mexico City, known for its cobblestone streets, art galleries, Frida Kahlo Museum and the preserved former home of Leon Trotsky. It is the so-called bohemian center of the city, and Medina describes sweeping mansions and colonial architecture as we talk. It’s a befitting location for the avant-garde Mexican musician to describe the work of his dreampop sextet Petite Amie, just before setting off on its U.S. tour.