Last September, Mastodon lost their manager Nick John to pancreatic cancer. To honor John, the group covered the Led Zeppelin classic “Stairway To Heaven.” The single was released over the weekend for Record Store Day and proceeds are going to pancreatic cancer research. 

Listen to the song below: 

Mastodon are embarking on a North American Tour next month with Coheed and Cambria and Every Time I Die, check out the tour dates here.