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.

Grammys 2015: All Our Coverage

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?

But they weren't done! For a second show-opening song, AC/DC dipped into the classics, rocking through "Highway to Hell," complete with some guitar theatrics from Angus Young.

Drummer Chris Slade confirmed the news yesterday (Feb. 7) via Facebook, saying, "YES the drum stool is under OLD management!" The drummer played in AC/DC between 1989 and 1994, and will now accompany the band on its upcoming 2015 tour.

Slade was brought back into the fold after old drummer Phil Rudd became estranged from the group when he was charged with threatening to kill an man in his employ in late 2014.

New album Rock Or Bust dropped Nov. 28 and debuted at No. 1 on Billboard's Top Rock Albums chart with 172,000 sold. It also debuted at No. 1 on Hard Rock Albums and No. 3 on the Billboard 200, where AC/DC scored its ninth top 10.