Observed arrival · 2026-09-17

opus.zip: a listening room for classical music

opus.zip Observed source

Editorial interest 84/100 Selection signal · not a rating of the site

A free, ad-free classical-music catalog organized by composer, work, movement, performer, playlist, and score.

Landing page captured for the 2026-09-17 issue.

Field notes

The catalog offers several ways to reach a recording: by composer, work, themed list, or radio, with a separate route for scores. Its visible index covers 76 composers, including 126 recordings for Frédéric Chopin and 50 for Ludwig van Beethoven. The homepage also exposes personal features such as favorites and custom lists, while describing account creation as optional.

Observed signals

Read the marks

Editorial observations of this landing page, not a rating.

○OpenPublic substance visible

✦PrettyNotable craft visible

●ProPolished or operationally mature

◎NicheUnusually specific use

ƒJavaScriptBrowser-side code central

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