So...
Write for three to five indefinite pitched percussion sounds (that is, a collection of noisy sounds that do not together resemble a pitched scale of any kind).
Employ rhythmic techniques and processes such as those discussed in class (i.e. additive/subtractive processes;augmentation/diminution; rhythmic canon; other generative processes, etc.).
Your piece must employ polyrhythm in at least one section of the composition (or throughout if you prefer) in one or more of the following ways:
The superimposition of rhythms with different metres/pulses (e.g. 3:2, 4:3, etc)
Rhythmic canon
The superimposition of (repeating) rhythms of unequal length
The superimposition of a rhythm upon different forms of augmentation and diminution
Other forms you may think of...

Duration 2-5 minutes.

That was the assignment rules at Uni and this is how it turned out.
I think its actually rather boring to listen to, but musically, its very interesting, anyone analysing it would have a field day!!!
Basically, what I did was take a single rhythm (the opening one on the wood block) and morphed and morphed and morphed it, until it became itself again! Fun, fun, fun, but keeping track of what I did got difficult about halfway through...
Its scored for a snare drum, triangle, bass drum, bongos and wood block, if you wanted to know, also it sounds better through headphones!

Finally, has anyone else found 'two delicious strips of swine flu' in their control panel, or is it just me?