aaron yabrov's tonmuseum has an interesting conceit for a found sound/field recording project. it was recorded in a german museum exhibit of historical musical instruments situated in a sound chamber. these sounds were then manipulated using the pitch dial on a tascam four track and other mechanically simple but conceptually ambitious techniques. for a better explanation, go here.
the results are by turns eerie and peacefully meditative. because the subject matter is musical instruments, it bridges the gap stylistically and philosophically between field recording based sound art and traditional music.
get it for free from pan y rosas discos.