So, there are tunes that get left behind. There are also compositions that evolve. Gas boot was another piece of work that was difficult to find a way into after being left for so long. This time, though, it gave birth to a new track.
In the process of writing a tune its possible to find a new groove while working on a small section. The groove hooks you, then gets added to until, all of a sudden, there is a new track being developed. The original track is left behind and the new tune grips you until it is finished. Miniseries is the culmination of this evolutionary process.