Obviously inspired by @PP_BOY_@lemmy.world 's question
Nonagon Infinity - King Gizzard and the Lizard Wizard. Though their other 25 albums are awesome too.
I am also partial to their album PetroDragonic Apocalypse; or, Dawn of Eternal Night: an Annihilation of Planet Earth and the Beginning of Merciless Damnation. Probably my favorite metal album, and they aren’t even a pure metal band.