2 nights ago I was outside in a lucid dream and nice music could be heard in the background. I decided to try running super fast. As I did the music faded and almost went away completely. Afraid I was waking up, I stopped running, and the music came back. That was intetesting to me. Another time I was outside on a boardwalk at night, and was eager to fly. I started hearing the old Peter Pan song "You can fly!", and I was singing along. It was right on note and lyric...but then, I know the song pretty well.