I'm currently working on I Giardini del Sogno, composed by Karl-Wieland Kurz. It's nine mutations on a 13th century madrigal, and one of my favorite all time pieces.
It's going really good so far, but I admit I'm pretty frightened by a couple of the mutations! hahaha
I'm also working on Francis Kleynjans' Arabesque here and there, I've finished exactly half of it so far. It's an easier piece I play around with whenever I need a break from I Giardini.