[OMFG] Band Covers Skrillex And I Need To Know WTF They Are Doing

Okay, I need some help here people: I just saw this awesome video of a band covering Skrillex‘s Scary Monsters And Nice Sprites. Trouble is, I have absolutely no idea what the bass and the guitar are doing at certain points in the song. It’s not what notes they are playing or the chords, it’s how the hell are they making those sounds??? Just check out the bass around :56 seconds as well as the guitar around 1:25. I’m really curious to know the technology behind those sounds. Hell, I’m kinda tempted, once I know what it is, to throw it into one of my project guitars just to have some fun. 

Check out the video after the jump and help me out!
smmascover