The fabulous anonymous collective Digital Mass have co-opted the recent Treetrunk release by Tange, "Constant 26", and warped and processed the piece into their own style of Constant. Members of the collective refuse to divulge their process(es), but thank Tange for his excellent source material.
"Constant" pieces, for those unfamiliar, are musical works based on being as minimal as possible-- finding the least possible thing necessary for listening. These pieces tend to be drone in nature. The original Constant appeared on Webbed Hand Records ( www.webbedhandrecords.com ), and others have been released at the TZP Drone Company ( http://www.archive.org/details/tzpdc ) and also here at Treetrunk.