The 2015 Grammys began with a blast from rock’s past. After an impassioned introduction from host LL Cool J, AC/DC took the stage with Chris Slade behind the kit, drumming for the hard rock band for the first time since 1994.

Rock fans didn’t have to wait long to see AC/DC perform on tonight’s Grammy Awards telecast. In fact, the legendary band opened the show with a two-song performance of the new cut ‘Rock or Bust’ and the classic ‘Highway to Hell.’

With a new-look lineup featuring Stevie Young stepping in for his ailing uncle Malcolm Young, and onetime AC/DC stickman Chris Slade filling in for the troubled Phil Rudd, the veteran rockers sounded as powerful as ever.

Brian Johnson delivered his signature raspy vocals in fine form, while guitarist Angus Young strutted around the stage with his school boy outfit and his Chuck Berry duckwalk. Check out video footage below.

The first cut was the title track from AC/DC’s 2014 album Rock Or Bust. So what do you think… did they rock or bust?

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Those spotted rocking out hard were Lady Gaga and Katy Perry.

Inside the L.A. Staples Center, artists like Lady Gaga pumped their fists to the high-energy song. Others, like Katy Perry, donned lit red horns in honor of the rock band.

Lead singer Brian Johnson kept it classic with his usual black shirt and jeans outfit.  The band followed up its performance with the classic song “Highway to Hell.”

Guitarist Angus Young still hasn’t let go of his school boy uniform while he did his usual sporadic kicks across the stage.

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