This is an encore presentation of a previous episode, originally airing in December 2020.

On today's show, keyboardist Derry deBorja (of Jason Isbell and the 400 Unit) talks about the musical influence of his older brother, his time as a member of Son Volt, how experimenting with a modular synth has changed how he views composition, and the 400 Unit's relationship with David Letterman. Visit jasonisbell.com for updates, and follow Derry on Instagram, @tin_pony.