optical disk

A CD is a round disc used to store music, movies, games, and more. It has a characteristic shiny surface.

It was the most popular media from the 1990s to the 2000s. It was widely used for K-pop albums and movie DVDs.

The advent of the CD brought revolutionary changes to the music industry. With its digital sound quality and ease of use, it replaced cassette tapes and LPs, and evolved into DVDs and Blu-rays, becoming the standard for video media.

Although streaming services are the trend these days, CDs that include special packaging and photo books, such as idol albums, are still popular. Especially among K-pop fans, collecting physical albums is an important part of fandom culture.