First it's happy, then sad Post

Yes, today's post will be happy, then it will be sad. The happy part is that today, Thomas Edison perfected the light bulb, creating the lights we use the basic principle of today. The sad part is the video. Today there are 2, Tweedle Annoying, and Tweedle More Annoying. One is a parody of the other one. Have fun, and I hope you enjoy this song more than I do.