Seems like I am basically repeating the reply above this one. So +1 :)
As for Musique Concrete, it was about tape splicing/cutting and reversing to create new sounds from existing ones. The module to go for is the MakeNoise Morphagene (very close to the old technique of splicing), but you'll be in heaven with a combo of Instruo Arbhar (grains) and Lubadh (tape). Unfortunately you'll need to complete it with utilities that complement the set. You'll need a clock with lots of CV (Pam's new/pro workout) a Maths wouldn't hurt, a VCA/LPG and some extra effects (FxAid). Often overlooked is that Musique Concrete builds on existing recordings and live captures. Don't forget a simple sample player or maybe even an ES-8 to capture/borrow any audio from the PC/Mac.
Cheers,
R.
It's a machine that demands devotion close to obsession. It's a machine you can fall in love with.