“Book 1 is the upcoming sixth studio album by Grimes. The songs on the album are metaphorically referred to as "chapters". It is set in the same universe as "Book 2" and "Book 3", in which the digital girl group, NPC, reside. Background Grimes had already started to think about her sixth studio album as early as 2018. During the release cycle for Grimes' previous studio album, Miss Anthropocene, Grimes had revealed in an interview with Zane Lowe that she had already been finished working on it for some months before its release and had already started working on its”