If you listen carefully, you can sometimes hear weird sounds and noises in recordings that were completely unintended. Here are some examples: Love Rollercoaster - Ohio Players During the breakdown at 2:33, you can hear what what sounds like a woman screaming. Legend has it that it was recorded in an apartment and someone was actually murdered next door. In reality, it was Billy Beck "doing one of those inhaling-type screeches that Minnie Ripperton did to reach her high note or Mariah Carey does to go octaves above". Since I've Been Loving You - Led Zeppelin Bonzo's bass drum pedal can be heard squeaking throughout the whole song. Low Spark of High Heeled Boys - Traffic At 4:18 you can hear another part of the song bleeding in. It starts a bit earlier but is most apparent at 4:18. I'm not sure if it's someone's headphones or vestiges of an incompletely erased track. Someone told me about a telephone ringing in the background of Johnny Cash's Folsom Prison Blues but I could never hear/find it. What else is out there?