Music legends don’t come any more unassuming than Charlie Haden. Courtesy of Reto Caduff’s charming documentary, we discover that the affable jazz bassist’s underlying honesty and decency inform every note of his music. As Haden camps out in a studio to revisit the country music of his youth, he reflects on his rural roots and his debut crooning twangy ballads on the radio at the age of two. Through wondrous archival footage and enlightening interviews, Caduff leads us through the next six decades, detailing Haden’s seminal collaborations with legends like Ornette Coleman and John Coltrane, as well as his ongoing projects such as Quartet West and Liberation Music Orchestra. Just as Haden’s simple playing style masks an innate understanding of the complexities of melody and composition, so too does his placid exterior disguise a deep-seated passion that manifests itself in his art, relationships, and politics.