The buttons on the top and the piano keys, all work and make different sounds. It appears to hold air well and draw air really well. It makes very good sound and sounds pretty loud. The on button on the front do not work. There is a small crack in the corner. It looks like it has been glued. The wood on the bottom is peeling a little bit, but not too bad. This could use a professional restoration. It’s still in very good shape. I am extremely unfamiliar with this instrument so if you have questions about certain things to test, please let me know.