this one is amazing:

play{a=LFPulse;b=(1..4);Mix(a.ar(a.ar(a.ar(a.ar(b/32)+1/8)+1b)+(Mix(a.ar(b/64))+a.ar(4/b)(a.ar(a.ar(b/8))2+b))100))/8!2}//#SuperCollider

audio:

http://fredrikolofsson.com/f0blog/files/audio/tweet0020.mp3

"this tweet is also totally deterministic and without any randomness. here a lot of nested square wave oscillators creates the complexity. basically there are 4 channels/voices mixed down to one and then duplicated in left and right channel. there are three levels deep nesting of frequency modulation with another set of square waves mixed and added."