CDs are not region locked - will play on any CD player or work in any CD drive.
However, supplemental discs like DVDs that are from Japan, are coded for Japan and will NOT work on U.S. players.
Blu-Rays from Japan WILL work on U.S. players, as they are coded the same as U.S. players.
Authentic, Japanese import release.
This means that any vocal or dialogue tracks are generally in Japanese.
By searching the CD title or catalog number you can find information online, including translated tracklists, for most CDs.
Please check all the details before purchasing.