AC/DC has shared its second single from the upcoming Rock or Bust album. The heavy title track has the Australians at their rock 'n' roll best, proving why they have been able to maintain an impressive career for more than four decades. Although guitarist Malcolm Young is not on the track and drummer Phil Rudd has a lot to deal with as of late, the group is living proof of the motto "Rock or Bust."

"You hear the guitar sound / Playin' nice and loud," Brian Johnson sings with his iron lungs. "Rock you to your knees / Gonna make your destiny."

The riffs are loud, the drums are earth-shattering and Angus Young's guitar work is still a marvel — head to the 1:58 mark for the traditional face-melter. AC/DC crams in so much heavy metal muscle into this three-minute rocker. Check it out below, via Blabbermouth.

Angus recently spoke to Rolling Stone about his brother's dementia, which is why the longtime guitarist parted ways with the band recently.

"It's something that had actually been happening for a long time," he said. Malcolm's symptoms of lapses in memory and concentration "had surfaced even before the last project."

Angus remembers that his brother was "still capable of knowing what he wanted to do. I had said to him, 'Do you want to go through with what we're doing?' And he said, 'S--t, yeah' ... [Malcolm] liked to finish what he started."

The guitarist is currently at a full-time care facility in Australia. His nephew, Stevie Young, took his spot for the new album and has been touring with the band.

Rudd will be back in court later this month as he faces charges of threatening to kill and possession of illegal substances. His murder-for-hire charge was dropped. Bassist Cliff Williams addressed the matter during a recent Reddit AMA.

"Phil has to get himself well," he said. "That may take some time."

"It's a bit of a question now. But the band is committed to going forward and touring," Angus added.

Rock or Bust is out Dec. 2.

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