It's a song by this Italian dude named Adriano Celentano called Prisencolinensinainciusol (don't ask me to pronounce it, I can't). Adriano loved American music, but he didn't speak any English. Prisencolinensinainciusol may sound like a popular American song from the time period, but it's actually complete gibberish with a few "Alright"s thrown in. Adriano made it in an attempt to mimic how American English sounds to someone who doesn't speak any English.
I heard this one. It's really neat, he never wrote the lyrics, since it was gibberish. Each performance was unique. He made it as a test to prove Italians would listen to anything that sounded American.