Thank you for viewing. This is a set of 35 Disney's English System Main Program CDs. I purchased these unopened and only made a copy at home. It includes almost all the songs from Sing Along. It also includes the audio of the stories from Straight Play. The approximate age is around 2004. The blue box may have deteriorated or have stains that cannot be removed due to age. Includes 4 indexes. Can be used with the Mother's Guide. It's like the CD version of the current Step by Step. (It is not exactly the same.) This CD set is broadly divided into CDs called Basic ABC's (photo 3) and Story (photo 4). Basic ABC's contains lesson content and songs. Story contains the content of the Straight Play stories. Basic ABC's includes almost all of the Sing Along songs. How to use (for example) ・Do lessons with the Mother's Guide. ・Extract and listen to the Sing Along songs. ・Play the Story CDs. etc. Just listening to them can be a way to learn English. Packaging will be simple, using recycled materials.