This is a Play Along 1 Blu-ray disc. Please understand that this is a product with some issues before purchasing. [Defective Parts] When playing on my player, there is a momentary video glitch during "what's inside?". The video glitch doesn't happen every time, but occurs about once every few dozen plays. The video doesn't stop during playback, it glitches for a moment and then continues, so it worked almost normally (and because my child is small), we kept watching without worrying. It doesn't stop, so there's no need to replay. How about this for those who want to try Play Along or DWE materials? However, please understand that there is no guarantee that it will play the same way on all players. No claims and no returns accepted. If you have any concerns, please feel free to comment before purchasing.