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[Simple] Tutorial showing how to fold an Exploding Envelope.
The background music (or shall I say 'noise'?) is my meanderings into the medium of human beat box humming which is humming and beatboxing at the same time.
I also make a couple sound effects.
The Exploding Envelope is a model I designed and published in my book Origami to Astonish and Amuse sold here: http://amzn.to/13smJt7