"Is this all real? Or has this been happening inside my head?"
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This dance event only happens in the movie version Harry Potter and the Deathly Hallows: Part 1 and is not mentioned in the book, Harry and Hermione never dance together.
Pass me that lovely little gun My dear, my darling one The cleaners are coming, one by one You don't even want to let them start
They are knocking now upon your door They measure the room, they know the score They're mopping up the butcher's floor Of your broken little hearts
O children
Forgive us now for what we've done It started out as a bit of fun Here, take these before we run away The keys to the gulag
O children Lift up your voice, lift up your voice Children Rejoice, rejoice
Here comes Frank and poor old Jim They're gathering round with all my friends We're older now, the light is dim And you are only just beginning
O children
We have the answer to all your fears It's short, it's simple, it's crystal dear It's round about, it's somewhere here Lost amongst our winnings
O children Lift up your voice, lift up your voice Children Rejoice, rejoice
The cleaners have done their job on you They're hip to it, man, they're in the groove They've hosed you down, you're good as new They're lining up to inspect you
O children
Poor old Jim's white as a ghost He's found the answer that was lost We're all weeping now, weeping because There ain't nothing we can do to protect you
O children Lift up your voice, lift up your voice Children Rejoice, rejoice
Hey little train! We are all jumping on The train that goes to the Kingdom We're happy, Ma, we're having fun And the train ain't even left the station
Hey, little train! Wait for me! I once was blind but now I see Have you left a seat for me? Is that such a stretch of the imagination?
Hey little train! Wait for me! I was held in chains but now I'm free I'm hanging in there, don't you see In this process of elimination
Hey little train! We are all jumping on The train that goes to the Kingdom We're happy, Ma, we're having fun It's beyond my wildest expectation
Hey little train! We are all jumping on The train that goes to the Kingdom We're happy, Ma, we're having fun And the train ain't even left the station
In an interview, Matt Biffa, the music supervisor for Harry Potter and the Deathly Hallows: Part 1, explained that he chose the song because he identified with its lyrics on a personal level, as he was separating from his wife at the time and worried how it would effect their two young sons: "There was something really uplifting about that 'O Children,' with lyrics like 'rejoice / lift up your voice,’ and all that stuff. I was thinking of my kids. The lyrics are saying, ‘Forgive us for what we’ve done.’ It started out as a bit of fun, but then there’s weeping. It was horribly on the nose for me. At the same time, it was giving me hope. It’s not the same as writing a song for my children, but this is the closest I can get."[1]
According to Biffa, obtaining permission to use the song in the film was not difficult, and Nick Cave was happy that it was a lesser-known Bad Seeds song that had been selected.[1]