This piece was intended (when written) to be the opening for a very macabre-themed musical about zombies and all their shenanigans (and about how much I dislike Andrew Lloyd Webber's Cats...)
I assume somewhere along the way I gave up on the musical...
But I think this piece is a decent stand alone (or at least the beginning to a kick-ass symphony), and probably my best piece written for a full orchestra.
This was written all on sheet music using the very elegant Notion 2.0 =D
I can't recall how long this took to write... But the essential make-up of the song is several sections which were sketches from other songs (from the musical) that all utilised the same 3 note theme (whether retrograded or slowed down to all hell and back or whatever).