Just now, while listening to my new Demi Lovato playlist, I came across the song Mistake from her Unbroken album. And I was thinking, this song sounds familiar.
It turns out, the Demi Lovato's Mistake has the same melody as that of Girls Generation's Japanese single, Born To Be A Lady. Really. Go and listen for yourselves.
It's too similar I thought for a while that Mistake was the English version of Born To Be A Lady.
Demi Lovato - Mistake
Girls Generation - Born To Be A Lady