Would you like play to unique sound box?

ARP-BOX is simply arpeggiator sound box with bounding balls.

You can put bounding balls in a colorful box by tap.
Bounding balls emit a sound then contacting walls.

ARP-BOX is playing polyrhythmic melody sounds by balls bounding.

If you want to remove bounding balls, you can open a box and wait for out-of-bounds balls.

and...
* box rotation by drag and swipe
* doppler effect by box rotation speed
* changing audio pitch and velocity
* changing balls direction by device shaking
* changing sound ( major penta tonic scale,minor penta tonic scale, Ryukyu(OKINAWA), Raindrop,Windchime(FURIN) )