The source provides a comprehensive look at recent activities of Lady Gaga, focusing on two significant events: her record-breaking concert on Copacabana Beach and her role in the film Joker: Folie à Deux. It details the massive scale of the concert, highlighting its cultural impact, overcoming security threats, and showcasing new music from her album Mayhem, while also outlining upcoming tour dates. Separately, the text discusses her performance as Harley Quinn in the Joker sequel, analyzing the film's musical direction, critical reception, and availability on streaming platforms, contrasting it with the original movie.