This story was produced in partnership with the Pulitzer Center. Plucking the resonant strings of a tonkori — a broad, sword-shaped instrument that’s been played by the Indigenous Ainu people for generations — Oki Kano, a Japanese musician of Ainu descent transformed a club in Kyoto into a vibrant tapestry of sound, mixing together rock, Ainu folk and dub music as part of a tour earlier this spring.