Almost any song or speech played backwards will have portions that sound like real English. The only thing that makes these unusual is that the reversed sounds seem to form coherent sentences.
Back around 1990, I recorded a song with a friend. We smoked several joints during the session. When we were done, we flipped the tape to hear if there were any backwards messages, and we heard: "We are all very high right now." Completely true, completely unintended.