After leading influential rockers Radio Futura, Santiago Auserón headed to Havana to record his first solo work as Juan Perro in the 1990s. It was the beginning of his fascinating explorations of son cubano, inspired by legendary artists he brings to the forefront in these curated picks—among them, great trovadores such as Compay Segundo, tres expert Niño Rivera and guaguancó icon Celeste Mendoza.