T Bone Burnett is the producer who has been building a map of American music for decades, and his career is worth examining as a coherent project rather than a series of individual credits.

His formal discography as a producer includes albums by Robert Plant and Alison Krauss, Elvis Costello, the Coen Brothers’ film soundtracks, the O Brother Where Art Thou? soundtrack that reintroduced a generation to old-time music, Roy Orbison, Tony Bennett, Elton John, and now multiple records with Ringo Starr. Before that, he was in Bob Dylan’s Rolling Thunder Revue as a guitarist. He has been present at important American music moments for fifty years.

What connects the work: an investment in authenticity, in the specific historical roots of American music, and in serving the artist rather than imposing a signature. His productions don’t all sound alike. O Brother sounds like O Brother, Raising Sand sounds like Raising Sand, the Coens’ films sound like themselves. What Burnett provides is curatorial intelligence, the knowledge of what music is behind the music, and the ability to create an environment in which that knowledge becomes audible.

His most recent phase, which includes the Ringo Starr collaborations and ongoing work with roots artists across genres, suggests a producer who is interested in legacy and the relationship between the music being made now and the music that made it possible. That’s a specific and valuable kind of production work, and it’s rare.

The fact that Burnett is working with Ringo Starr on country records is not strange. It’s the logical conclusion of a career built around the same question: what does American music actually contain, and how do we make that audible?