I do feel like that song right now. It's indescribable what it can feel like when you sing when every bit of your energy, all of it going to just one moment. It seems like a large waste, but it's not. The sensation is literally like opening the sun for the first time on a dark world. Or your heart exploding into a rushing river to feed a barren land. Your entire being vibrates, your soul shudders to give the world a song, if only for that moment of pure, illuminating light.