Opus Eponymous CD / Album

Indicates the physical or digital format in which a product is presented, such as "Hardback", "Paperback", "DVD", "Blu‑ray", "Vinyl", or other media types. The value may contain multiple comma‑separated items to represent combined attributes (e.g., "Hardback, Illustrated").

A category that describes the thematic or stylistic type of a product, such as movies, music, books, games, or other media. It helps users find similar items and understand the general content or style of the item.

The total count of individual discs included in the product package or media collection. It indicates how many separate physical discs are provided, such as DVDs, Blu‑Ray discs, or CD‑ROMs. The value is a whole number and can be used to determine storage capacity, packaging size, or media quantity for inventory and shipping purposes.

The calendar date on which the product was first made available to the public or released for sale. It is expressed as a full year, month, and day (YYYY-MM-DD) and can be used to filter or sort items by release period.