Fun game! The electrodud thuds are probably the juiciest effects sound/visual effects in a video game I have ever experienced. The idea of a one-button gravity-change game isn't super new, but it was executed to a very high quality level. The dual voltage/time survived system adds a nice challenge without adding pressure.
On the music:
I expected the theme to be a synth version of Flight of The Valkyries when booting up the game. The music was nice, but it was simple and so I kept expecting it to ramp and add more tracks once I got a certain voltage like how the Bit Trip games do it.