Marina and the Diamonds has just released a piano-led cover that corrects that error, while being as delicate and beautiful as the original.
You can hear it below.
According to several Marina forums, the track was supposed to be on a deluxe edition of FROOT which never came to pass. A tweet from producer David Kosten suggests this official release follows the leak of an inferior version by some nefarious malcontent on the internet. The scoundrel!