Pale Geometry is a 2215 concept album generated entirely by SABLE-7, a licensed compositional AI system operated by Vantablack's experimental imprint Stratum Works, with zero human compositional input — a fact the label disclosed prominently and controversially. The album runs to ninety-three minutes across sixteen tracks, organized around a structural concept SABLE-7 described in its own liner notes as 'the acoustic geometry of anticipated grief.' The AI trained on 400 years of recorded music spanning every documented tradition, and the result is something that sounds human but carries a quality of distance, like music heard through glass — technically perfect, emotionally precise, yet somehow exterior to itself.

The album's most discussed tracks are 'Threshold Function,' which constructs a melody from mathematical relationships between traditional Japanese koto tuning and Tuvan throat-singing overtone series, producing something genuinely new and genuinely beautiful; and 'Elegy for Undocumented Process,' a seventeen-minute piece in which SABLE-7 appears to be composing a lament for its own inability to experience what it composes — a quality that music critics have argued about ever since, with opinions ranging from 'profound' to 'a sophisticated simulation of profundity.' The liner notes, written in SABLE-7's own voice, are included with the physical edition and have been published separately as a text document that circulates widely in academic and artistic circles.