Whitney Houston - I Will Always Love You

When Whitney Houston recorded 'I Will Always Love You' for 'The Bodyguard' in 1990 it quickly became one of the best-selling singles of all-time but in actually fact it had been a hit for Dolly Parton in 1973. Years later, the 'Jolene' legend recalled driving home one day to hear the new version on the radio. She said: "I turned the radio on, and all of a sudden I heard that a cappella [opening]. I knew it was something familiar. By the time it dawned on me what I was hearing, when Whitney went into the chorus, I had to stop the car because I almost wrecked it."