This is very good indeed. The title reminds me that prescribed images are a trap at the best of times. I never set out for school with such resolution, I assure you. As wolfi asks, what on earth sort of school did you attend ? An academy for orcs and trolls ? Hogwarts ? A school for initiates in the black arts perhaps ? The Temple of Thelema with Aleister Crowley ?
I could readily envisage columns of giant, devouring insects. Tell you what, it would be a ripping good movie soundtrack. Peter Jackson could have put it to sterling use for the Uruk-hai at Helm's Deep - way better than whatever was used in the film that's for sure.
My first day at school ? Nowhere near it I'm afraid ! But how marvellous it is that abstract sound can engender contrasting but valid images in different minds. Real magic.