ezii is a keyboard instrument designed for beginners that consists of a main keyboard and three accessories. The interactions of the three accessories are inspired by the sand hammer, theremin and vocoder. With ezii, beginners can "re-arrange their practices", "create music" and "play music with others", three "luxurious" experiences for them. (All of these are clearly described in the video at the link). The purpose of ezii is to allow beginners to explore music and to get musical achievements from it, which is a very important factor in keeping them going!