Having drawn the blueprint for countless rock, metal, grunge, goth and indie bands, Black Sabbath, the long-maned music pioneers from Birmingham, England, are finally calling it quits, performing their final U.S. show on Saturday in San Antonio, Texas. Here’s a look at three bands keeping Sabbath’s dark, unholy flame burning:

Electric Wizard

Key album: “Dopethrone” (2000)

Members of Electric Wizard are among Sabbath’s most devoted acolytes. Their 2000 album, “Dopethrone,” a classic example of “doom metal,” a Sabbath-inspired subgenre, is heavy, sludgy and slow, a departure from the fast, chugging “thrash” metal popularized by bands such as Metallica and Slayer. Nostalgia for the simple melodies of Sabbath’s early-1970s sound is part of Electric Wizard’s appeal, but its distorted sonic textures are distinctively modern. In a recent interview with music magazine “It’s Psychedelic Baby,” Jus Oborn, Electric Wizard’s guitarist, says the band has built a studio in “a farmhouse pretty much in the middle of nowhere” and is finishing their latest album, a follow-up to 2014’s “Time to Die.”

Mastodon

Key album: “Blood Mountain” (2006)

Black Sabbath is known for fusing heavy blues-rock, psychedelia and progressive-rock into what became heavy metal, but what’s less known is the virtuosity of its members, especially guitarist Tony Iommi—who lost two fingertips in a factory accident—and bassist Geezer Butler. “Anytime those two are playing together, it’s worth seeing,” says Joseph Schafer, editor-in-chief of metal website Invisible Oranges, who’s seen two concerts in Sabbath’s “The End” farewell tour. “Black Sabbath is as much the experimental, groundbreaking underground outfit that the Velvet Underground was,” he says. This technical prowess and willingness to experiment lives on with two well-known heirs to Sabbath’s legacy: Opeth, a genre-crossing “progressive-metal” band from Sweden, and Mastodon, from Atlanta. “Blood Mountain,” one of Mastodon’s career highlights, veers from doom-laden noise and complex tempo changes to haunting melodies.