How We Score Jazz Albums
A single number tells you very little unless you know how it was reached. Every review on JazzAlbumReviews scores the album on the same six dimensions, and the overall rating is calculated from those scores with fixed weights. The writer never picks the final number directly, so a 7.8 here means the same thing for a decades-old classic as for this year's release.
Each album is then scored five more times, independently. The published score for every dimension is the median of those five runs, so a single unusually generous or harsh pass cannot move the rating. The reasons shown on the scorecard are kept in line with the published scores.
The six dimensions
| Dimension | Weight | What it measures |
|---|---|---|
| Composition | 20% | Themes, arrangements, harmonic ideas and the frameworks built for improvisation: whether the written material gives the players something worth playing on. |
| Recording | 15% | Sound, balance, room and engineering: how well the record captures the band, from the presence of the rhythm section to the placement of the horns. |
| Performance | 30% | Improvisation, interplay, ensemble feel and solos: the quality of the playing itself and how the musicians respond to one another. |
| Cohesion | 15% | Sequencing, pacing, length and filler: whether it works as an album rather than a collection of takes. |
| Originality | 10% | What it adds, measured against the leader's own catalog and the peers of its moment, not against what came later. |
| Replay value | 10% | How it holds up on repeat listens and over time. For recent releases this is a projection and the note says so. |
Performance and Composition carry the most weight because they are what a jazz album is made of. The other dimensions decide whether those parts hold together as an album, and whether it is a record people return to.
What we deliberately don't score
Cultural impact, sales and chart history are not part of the score. They reward popularity, they cannot be judged for a new release, and they would make every classic a 10 by default. We discuss impact in the text, where it explains the album, but the score measures the record itself.
This is why a famous album can score lower here than its reputation suggests. A record that changed the genre but runs long, carries filler or leans on a handful of great songs loses points on cohesion and replay value, and its influence does not win them back. A lower score on such an album is a judgment about how it plays front to back, not about how much it mattered.
The scale
Each dimension is scored from 0 to 10 in half points. The same bands apply to every dimension and to the overall rating. Most albums by established artists land between 6 and 8; scores of 9 and above are reserved for records that are among the best in the genre on that measure.
Rankings follow the scores
When we rank an artist's albums, the order comes from the same scorecards, and every review explains where the album sits in the artist's catalog. Before a review is written, the scores we have already given the artist's other albums are part of its brief, so the relative order is a decision, not an accident.
On an artist's ranking page, an album we have reviewed shows its scorecard rating. An album we have not reviewed in full shows an editorial estimate marked with a tilde (~). An estimate never places an album above a reviewed one that our editors ranked higher.
Facts and sources
Tracklists and release data come from MusicBrainz. Credits, dates, chart positions and quotes come from the album's Wikipedia article, which is given to the writer as a fact sheet. If a fact is not in those sources, the review does not state it: no guessed producers, figures or quotes. Tracklists are checked against the source data before anything is published.
Who writes the reviews
Reviews are written by AI (Anthropic's Claude) under this methodology, in one of ten editorial voices. A voice is a listening focus, such as production, lyrics or a regional scene, not a person. The reviews never claim personal memories or experiences. Every review on the site is written to this methodology and shows its scorecard.