Céline Dion and Jack Black have provided one of the more unexpected sights from Metallica's Las Vegas residency, with footage showing the two stars headbanging, singing along and playing imaginary instruments during the band's performance at Sphere.
But the encounter was more than a one-night celebrity appearance. Dion actually attended two Metallica concerts in three days, and her enthusiasm for the heavy metal band has a surprisingly personal connection.
The Canadian singer was first spotted at Sphere on Thursday, November 5, enthusiastically miming bass guitar during a musical segment featuring Metallica guitarist Kirk Hammett and bassist Robert Trujillo.
She returned on Saturday, November 7, this time with her twin sons, Eddy and Nelson, while actor and Tenacious D musician Jack Black was also among the audience.
In footage published by TMZ, Dion can be seen throwing her arms into the air, headbanging and playing air guitar as Metallica perform their 1991 hit "Enter Sandman". Black, standing a few seats away, enthusiastically mouths the lyrics before the pair clap above their heads during a guitar solo.
Why Céline Dion's Metallica obsession isn't entirely surprising
Although Dion is internationally associated with power ballads such as "My Heart Will Go On" and "All By Myself", her appreciation for Metallica was documented months before the Las Vegas concerts.
In an Instagram video shared earlier in 2026, Dion discussed her personal music playlist, which included Metallica's 1996 song "Until It Sleeps". She also explained that Metallica was the favourite band of her son Eddy.
That detail gives the Las Vegas appearances a different context. Rather than simply turning up at an unlikely concert, Dion was sharing an experience connected to her family's musical tastes.
There was another distinction between her two visits. Metallica's Life Burns Faster residency follows the band's "No Repeat Weekend" format, meaning Thursday and Saturday concerts feature different setlists. Dion therefore experienced two separate shows rather than seeing the same performance twice.
Céline Dion meets Metallica backstage with her sons
Following Saturday's concert, Dion and her sons went backstage to meet James Hetfield, Lars Ulrich, Kirk Hammett and Robert Trujillo.
On November 8, she shared photographs of the encounter on Instagram, including a group picture with the musicians and playful moments alongside Trujillo.
"Thank you James, Lars, Kirk and Robert and everyone from the @Metallica organization for the warm welcome!" she wrote, adding that the family had loved the show.
The photographs offered a more personal glimpse of a weekend that had already attracted attention through fan-recorded concert videos.
What comes next for Metallica at Sphere?
The November 7 performance marked Metallica's final Sphere concert of 2026, but their Las Vegas residency is not over.
According to the band's official residency schedule, performances resume on January 28, 2027, with additional Thursday and Saturday shows scheduled through March 13.
For Dion, the weekend also followed a major return to live performance. The singer completed a series of concerts in Paris in October 2026, following years of disrupted touring after her diagnosis with stiff-person syndrome.
Her Las Vegas appearance was not an onstage collaboration with Metallica, but the videos, family connection and backstage photographs captured something genuine: one of pop music's most recognisable voices enjoying a very different kind of live show.
