Marcus King proved he's not just a country musician—he's a student of Southern rock. The singer teamed up with producer Dan Auerbach and guitarist Tom Bukovac to recreate Gregg Allman's 1981 television performance of "Come and Go Blues," and the results are haunting.

King had never played the song before. According to Rolling Stone, the track was recorded live at Auerbach's Easy Eye Sound Studios in Nashville, and King learned it on the spot.

Auerbach, who produced the recording, revealed that King texted him with the idea to tackle Allman's acoustic version. "When Marcus texted me about this project, he said, 'I was thinking about doing that acoustic version that Gregg did on TV,' and I said, 'I know exactly what you're talking about. That'd be so fun,'" Auerbach told Nashville Now podcast listeners.

The cover drops ahead of a new documentary celebrating the late Allman Brothers Band legend. Gregg Allman: The Music of My Soul premieres June 17 across more than 200 screens in America, with premiere events in New York and Macon, Georgia.

Gregg Allman, who died nine years ago at age 69, remains a titan in Southern rock history. The original "Come and Go Blues" appeared on the Allman Brothers Band's 1973 album Brothers and Sisters. King's decision to honor it carries weight in the community.

Director James Keach is behind the documentary. He has produced biopics for Glen Campbell and Johnny Cash. Rolling Stone Films is partnering on the project, and premiere events are already selling out.