Riffing is their business . . . and business is good: The latest iteration of thrash-metal titans Megadeth brings the heat on a blistering 15th album, “Dystopia.” Recorded near leader Dave Mustaine’s Nashville home, the band’s newest members — Angra guitarist Kiko Loureiro and Lamb of God drummer Chris Adler — fall in line with Mustaine and longtime bassist Dave Ellefson, offering up 11 tracks boiling over with the anger, energy, smarts, and cathartic snarl for which Megadeth is known. The band is brawny yet nimble, wriggling and writhing in a groove one moment, pivoting into pummel mode the next. Sinister, cynical lyrics cast a weary eye on the state of the world, from the rant of “Foreign Policy” to growls about “tyrannicide” on the Poe/“I Heard it Through the Grapevine” quoting title track — surely a first for that combination. And on the furious “Post American World,” Mustaine threatens in his cautionary grunt, “If you don’t like where we’re going/ Then you won’t like what’s coming next.”



ESSENTIAL “Fatal Illusion”

Megadeth plays the House of Blues March 21.

Sarah Rodman can be reached at srodman@globe.com.