The basis of this piece is a set of field recordings of a stream underneath a storm drain near my old house. As you can imagine from the title, it was a rather cold and grey morning; you can still hear the occasional bird call though.
The crackling rhythmic elements are provided by a generative patch constructed on a Clavia Nord Micro Modular, a device that allows you to construct virtual modular audio generators. I use the Nord (now a G2X) extensively for this kind of 'autopoietic' work.
Finally, several elements of the field recording were heavily processed and re-employed as harmonic devices.