Takes a while to get going, but not bad
The first minute or me left me wondering where the piece was going, but once it does get going, it's pretty good. I'm not sure if bubbly is what I'd describe it as, but it does has a distinct sound. The piece seems to rely on a single main idea to carry it through, but I think you've managed to keep it interesting most of the time. The sounds are simple but not unenjoyable (though maybe I'd filter the drums some to give a less generic electro-kit feel). Good stuff.