If you want to get nerdy and add your own songs with flashing lights in the mix, this digital music instrument consists of a unique touch-sensitive 16 x 16 color LED button matrix that provides a visual experience in-sync with its musical performance.
You could, for example, create a track in one block, then copy that to another block and edit it to create a variation. Or you can load a number of previously-created tunes into separate blocks from an SD Memory Card and switch between them to create more variations during playback.