Apparently you can pick them up online quite easily or at Toys R Us warehouses and other toy shops. The pieces are much smaller than your average Lego bricks but luckily they give you some extra bits in case you want to get creative and/or mislay some of the parts.
Oh those Japanese, they come up with smaller and more amazing things these days!
More photos below or you can visit:
|Somewhat simple instructions|
|The final synthesiser!|