Carlos Paredes is generally considered the greatest practitioner of the Portuguese guitar, a lute with six pairs of steel strings that’s the key instrument of the nation’s musical form, fado. Paredes, who died in 2004 at age 79, emerged from a famous musical family—his father Artur also played the instrument, modifying it to give it greater sustain and a softer attack. Still, it was Carlos who really made a mark, as a key exponent of Coimbra fado, named for the city his family was from—a gentler, more romantic strain of the style than the one played in Lisbon.