Oxford Reading Tree Oxford Reading Tree Korean Sound Book stage 1+ More Patterned Stories 6 books Compatible with Korean sound pens. Of course, those who do not have a sound pen can also read it as a picture book. I had purchased each series new and collected them, but they overlapped with a series I received used, so I will give away the ones I purchased new. They are in very good condition, having been read only a few times. If you would like the [Magic Chart (new)] that can play all the audio with a Korean ORT pen, I will give it to you for 【an additional 2000 yen】, so please comment.