<span>When clicking on the link, you are redirected to a YouTube video of children singing the alphabet backwards. After some figuring, it appears if you match the forward English alphabet with the English alphabet backwards, each letter will substitute into tjctf{n0t_a_ca3s4r_c1ph3r}. The cipher key looks something like this:</span><span>A B C D E F G H I J K L M N O P Q R S T U V W X Y ZZ Y X W V U T S R Q P O N M L K J U H G F E D C B A</span>