Trying to replicate this.

[Yoozer]

Start with telling us what kind of synths/plugins you have at your disposal.

The first isn't really difficult to make. In the second (also not that difficult) the screeching sounds add most of the atmosphere, the bass not so much.

[RawStateSystem]

Alright well, I don't suppose you've ever heard of Ableton Live's Analog and Operator? Any tips? Thanks for the reply, real awesome of you.

[Yoozer]

Yes, but since I only have the regular version of Live I really haven't done anything with 'm - to use either requires me to re-start in demo mode (which means I can't save patches).

Anyway, for nr.1: if it's the bass arp starting at 2:02, take a single oscillator, square wave, choose lowpass filter, turn resonance up slightly (say, 20% or so), enable keytracking for the filter cutoff, and turn the filter cutoff up or down until the resonance gives the desired effect. (my suspicion is that they re-used the sound before 2:02 where it just plays a static note). The difference is that with the arp, filter envelope modulation is also enabled; choose for ADSR something like 0 40% 0 0, and adjust the modulation amount to taste.

For number two, a quickly repeated sample of a bass guitar would also work (faster than full instructions on how to make a bass guitar-like sound); if you have Live's Suite version, then you also have Tension (physical modeling for string instruments) - choose a bass guitar patch in there, and sample a single note. Load that audio file in Simpler and switch Simpler to monophonic mode and set velocity to zero (so each note is equally loud). Throw a 16th note Arpeggiator device on it (no octave/note jumping required) and hold down a single note.

[RawStateSystem]

Excellent, that's been a real eye openner. Can't thank you enough! Been doing some fine tuning, everything is going really well.