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In page Ob-La-Di, Ob-La-Da:

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The Beatles' decision not to issue "Ob-La-Di, Ob-La-Da" as a single in the UK or the US led to many acts rushing to record the song, in the hope of achieving a hit in those countries.[1] A recording by the Scottish pop band Marmalade, released in late 1968, became the most commercially successful of all the cover versions of songs from The Beatles.[2] It reached number 1 on the Record Retailer chart (subsequently the UK Singles Chart) in January 1969, making Marmalade the first Scottish group to top that chart.[3][4]