As Grateful Dead HQ continues to prep their 50th Anniversary Edition of Skull & Roses, the team has shared a fiery take on “Bertha,” captured on April 27, 1971 at the legendary Fillmore East.

Writes GD legacy manager/archivist David Lemieux, “Kicking off Skull & Roses, ‘Bertha’ is the first official recording of a Garcia-Hunter song since the remarkably strong batch of 1970’s double bill of Workingman’s Dead and American Beauty, and it certainly keeps up the A-level songwriting from the previous year’s magnificent output. Bertha remained an important part of the Dead’s live repertoire, played consistently from 1971 to 1995, a testament to both how much the band loved playing it, and how much Dead Heads loved hearing it.”

The 50th anniversary edition of Skull & Roses will drop on June 25.

Click here to pre-order.

Listen to the 4/27/71 “Bertha” below: