Hades (stylized in all caps) is the fourth studio album by American singer Melanie Martinez. It was released on March 27, 2026, through Atlantic Records. The album serves as the first installment of a simultaneous release whose main theme would be both utopian and dystopian, with Hades mainly exploring the latter theme. Martinez released four singles from the album, "Possession", "Disney Princess", "Uncanny Valley" and "The Vatican".