Robert Plant's Digging Deep podcast has returned for its fourth season. He and co-host Matt Everitt pick up their conversation on the season opener with "Bluebirds Over the Mountain," a song written and recorded by Ersel Hickey in 1958 and made a hit by Ritchie Valens that same year. Plant recorded a version for his 2017 Nonesuch album, Carry Fire, with guest vocalist Chrissie Hynde. You can hear the podcast episode and watch the video for Plant's take on the song here.

The latest episode of Robert Plant's new podcast series, Digging Deep, digs deep into the title track from his latest album, Carry Fire. "The way that we've been constructing music for the last couple of albums with the Space Shifters has been pretty modular," he says. "Each guy in our cooperative creates ideas and sends them to me or to each other and they go up to the misty mountains ... There's a lot of sketches, some of them are black-and-white, some of them are going into color and that's how all these songs are developed." You can listen to the episode and watch a live performance of "Carry Fire" here.