Abstract
In this paper, an electronic music box (the orgel) system, based on the LET Tile System the author has been developing, which has the abilities of pattern drawing by light on dot matrix LED and exteing by connecting multiple units. In this system, the user can define the music score by drawing dot patterns on dot matrix LED, and each drawn dot represents the music note, whose the horizontal and the vertical positions are correspinging to the time line and the music scale, respectively. The unit has the connectors with magnet for both physical and electrical connections. Both the time line and the music scale can be extended by connecting the units in the horizontal and the vertical directions, respectively. The unit can also be configured by the user's motion, such as shaking for clear patterns or tilting for chaning play speed.
