Rzewski Scores

Composer Frederic Rzewski has placed a number of his scores online here. (A second site, here, does not appear to be working; Rzewski also has a note here (scroll down) on "copyleft"; I believe, however, that he intends the copyleft status to apply to his sheet music (which can be freely downloaded or printed out, or ordered from his manager, when properly attributed) but he has not released the performance rights into the public domain. I may be a broken record on this topic, but it is really the way to go for most composers).