The deviation chart

The dashed ring is the artist’s norm — where their catalogue usually sits. Each spoke is one trait (mood, production, vocals, and so on). The orange shape is this album: where it bulges past the ring, the album leans harder into that trait than usual; where it pulls inside, it’s more restrained.

Hover a dot to see which trait it is, then click it (or a tab) to read what’s different and which tracks show it best.

A departure isn’t measured against music in general — it’s measured against this artist. We compare the album’s signature on each trait to the average of the artist’s other albums, then scale it by how much that artist normally varies. A small shift for a wildly eclectic band barely registers, while the same shift for a consistent one reads as a real move. The ±σ figure is that scaled distance.

The chart only appears when there’s a real story to tell: enough enriched albums to form a baseline, and at least a few traits that genuinely depart from it. An album that sits squarely in step with its artist’s catalogue doesn’t get a chart — there’s nothing to chart.