Pipe Organ Simulation

So, I have done quite a bit with this project compared to the engine this past week. It is pretty much just a wave maker that creates interesting sounds by changing quite a few variables. I want to make it so its purpose is to recreate organ sounds (like the wave you see in the pic). But once you touch any variable, I will ether sound good or blow you brains out. So this will be a project that I will dabble in every so often to figure out how to fix it. (maybe use preset waves and modify those)