http://soundcloud.com/ghost9-1/canna-bass-louis-nellis-ghost9

Okay, soooo here's how I went about this.

Made simple massive patch, using flenders II, saw I, and a sin formant, than used a band reject and band pass filter, automated them with massives lfos, the first one goes on the wave table ...

Here are two halloween, creepy dark sounding songs. Soundcloud
Soundcloud