Question: What is the name of the first disc in the album the residency show I Am... Yours was held in support of?
Sentence (from "I Am... Sasha Fierce"): The first disc, "I Am...", contains slow and midtempo pop and R&B ballads, while the second, "Sasha Fierce" (named after Beyoncé's on-stage alter ego), focuses on more uptempo beats that blend electropop and Europop genres.
Relevant evidence: Yes