On Sept. 20, Hippo Campus released its fourth studio album. Although the title “Flood” can evoke auditory memories of the band’s past triumphs like singles “Monsoon” or “Bubbles,” the album has neither the emotion of the former nor the ingenuity of the latter. Hippo Campus’ new album does not exhibit the same musical quality that put the band on NPR Music’s favorite new artists list in 2017.