Simply called the 'Hermione Mix', this is the soundtrack to your Harry Potter-themed Halloween party this year, we guarantee. 

Featuring a group of fresh-faced youngsters that have gone on to become multi-millionaires, this Hermione remix is the song that you never knew existed based on scenes from Harry Potter.

While Emma, as we all know by now, has grown up and turned into a real adult who has been busy giving speeches at the UN in recent weeks, it's worth remembering where we first met song form, of course.

Via Mashable