Lady Gaga has recalled being an extra in an AC/DC video. During an appearance on Apple TV's A Carpool Karaoke Christmas, which was released on Sunday night, Gaga showed a clip of her late grandmother singing AC/DC's 1979 hit Highway to Hell before host Zane Lowe surprised her with an appearance by the band's lead singer Brian Johnson.

"You guys ready to rock?" Lowe asked, to which Gaga replied, "This is the moment." From there, Johnson and Gaga began a duet of the AC/DC hit, “Highway to Hell." They eventually

While regaling a surprised Lowe with the spicy lyrics to her 2008 single "Christmas Tree," Gaga also shared a clip of her late grandmother singing AC/DC's "Highway to Hell," in a

Dua Lipa and Chappell Roan, the pop icon, 38, recalled a time when she was told to tone things down as a music video extra. While speaking with Zane Lowe, Gaga took the opportunity to share a clip of her late grandmother singing AC/DC’s 1979 classic “Highway to Hell.

Lady Gaga has recalled being an extra in AC/DC's 'Stiff Upper Lip' music video when she was a teenager. The 38-year-old pop megastar was surprised when DJ Zane Lowe got the legendary rock group's frontman Brian Johnson,