Thanks D.Ipsum! Glad you liked it.
Well, on this track (as well as most of the others) I use this great free VSTi called Tethys 2. I'm guilty of using it probably way too much, to be honest. hahah
But I like it because it's really really versatile. All the different melodies, and chords and also the bass on this song all come from this one plugin.
And yes, I messed around the envelope a whole lot with all the different parts. But the automation was used with the drums. Despite the crazy sound it makes, it's just chorus where I automated the feedback knob. Turning up the feedback knob makes the drums spastic and loose and turning it down makes them tight and contained.
Aside from that, I also used a low pass filter on the drums at the beginning and end of the track.