Beck showed up at The Black Keys concert in Paris on June 18, 2023. (He was in town for his own show there ten days later.) During the encore, they performed a cover of "Loser" where Beck sang lead (and the band Shannon and the Clams joined). Beck also stayed on stage and sang along during the Keys' "Lonely Boy."
[people and bands
Drums: Patrick Carney
Headliner: The Black Keys
Vocals: Beck Hansen, Dan Auerbach
Vocals (Background): Beck Hansen, Dan Auerbach, Shannon and the Clams