During her performance at Lollapalooza 2024, Kesha unknowingly used a real butcher knife instead of a prop blade while singing her song 'Backstabber'. The singer discovered the switch after the show, claiming on social media that the prop knife had been replaced without her knowledge. The incident sparked significant reactions online, with fans expressing concern over the potential danger and calling for an investigation. Kesha's performance marked one of her first public appearances since settling a defamation lawsuit with Dr. Luke and leaving his label, Kemosabe Records. The set featured a mix of her classic hits and new material, receiving an overall positive reception. Despite the knife mishap, Kesha expressed gratitude for her band and friends in subsequent social media posts.