This is the Pxtone project, an archive ment for archiving the works of those people who make music with piston collage. It was mainly created because noone was using the pxtone outside from a handfull of people and those from Japan. I liked some piston collage music, and so, the archive was born. Here we aim to archive all of the piston music we can find, so at least these works don't fade away. 
Links that have been archived.
http://pxtone.haru.gs/index.html
The contests on here from 2013 and up are only .mp3, so I will archive them and put them up on archive.org.
http://pistonsource.agargara.com/indexen.html
Alot of music! Even I have not heard them all!
Links that still have to be archived
https://www.ptweb.me/
A new piston collage site. Looks interesting.
If you can help me archive any of these, just let me know at thechiparchiver@gmail.com