Remember the video of Stiff Upper Lip of AC/DC? It was the title track of the 2000 album, the Australian band's first from Ballbreaker of 1995.
Lady Gaga was in the video directed by Andy Morahan. He was obviously not a pop star, his first album was from 2008, but a simple extra, one of the people who go wild listening to the band playing on the street.
It's a well-known fact, which Gaga recalled in the special episode of A Carpool Karaoke Christmas on Apple TV with Zane Lowe and also featuring Chappell Roan and Dua Lipa.
«I was 17 years old» Gaga recalled during the special where Brian Johnson of AC/DC made a surprise appearance «and I was headbanging. They told me: don't do it, we want it to be a modern video.”
Here is the video where Gaga appears fleetingly (for example at minute 2:25):
