"9 to 5" is the title of a popular song recorded by Sheena Easton in 1980, becoming her biggest hit. It peaked at No.3 in the United Kingdom in August 1980 and was released in the United States in February 1981 (retitled Morning Train to avoid confusion with a similarly named song), where it reached No.1.
Easton had released one single prior to "9 to 5": "Modern Girl". This had failed to chart highly, but after exposure on the BBC documentary, The Big Time, both "9 to 5" and "Modern Girl" were propelled into the top ten at the same time, making her the first female artist to achieve this feat. "9 to 5" became a top three hit and was one of the best-selling singles of the year.
Early in 1981, EMI Records decided to launch Easton in the US and released "9 to 5" as her debut single. The title of the song was changed to "Morning Train (Nine to Five)" to avoid confusion with the Dolly Parton song of the same name. Easton's song went to #1 on both the U.S. pop and adult contemporary charts; it remained at the top for two weeks on Billboard's pop chart.
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