i beat the game and afterwards was looking at the reviews, i saw that many people were having problems with 16, well i went to the walkthrough, and tried what i saw. it didn't work. what i did is removed the bulb one down and left of the lit bulb, creating a arch between the lit bulb and the other blank, than placed the jumper one and to the right, 2/3 times worked.
was a good time waster but with only twenty levels i went through it pretty quick, i cant say anything about the music as i have no sound here. but other than that was ok.