I've got two recent hour-length PD compositions available. More should be coming fairly soon.
http://acreil.bandcamp.com/album/flutter-straight-on-the-nine-miles
This one is based on the harmonic series of 30 Hz. Shorter excerpt: https://www.youtube.com/watch?v=6XAg1cc7tHY
http://acreil.bandcamp.com/album/hg-iterated-glass-entering-3e2
This uses granular synthesis and feedback delay network resonators. Shorter excerpt: https://www.youtube.com/watch?v=szSV2jMMevU