Marcello Hernández, a comedian known for his work on “Saturday Night Live,” makes a surprise appearance during Rosalía’s “LUX Tour” stop at Madison Square Garden in New York City. According to reports, he joins the Spanish singer during the second night of her run at the venue and participates in a scripted “confessional” segment staged for the show. During the appearance, Hernández tells Rosalía that he “committed a crime” for her, referencing the onstage bit described by coverage of the event. Both outlets place the moment on Wednesday, during the concert that follows a prior night at the same arena. The coverage characterizes the appearance as part of the show’s entertainment format rather than as an offstage event. The reports also note the broader context of Rosalía’s tour, with the New York engagement occurring over consecutive nights at Madison Square Garden, and the confessional segment featuring Hernández as a guest moment within the performance.