Omnium Gatherum is the 20th studio album and first double album by Australian psychedelic rock band King Gizzard & the Lizard Wizard, released on 22 April 2022. The album was announced on 8 March 2022 and made available for pre-order on 22 March. It marked the first studio release where all band members are playing together live since the onset of the COVID-19 pandemic. As with previous releases, the album features music of numerous genres, including psychedelia, progressive rock, heavy metal and synth-pop, as well as the band's first experiments with hip hop. It received generally positive reviews, although critics were divided on its length and consistency.