Nine Beet Stretch is a piece by sound artist Leif Inge, which takes a recording of Beethoven's Ninth Symphony and stretches it from its normal length of one hour to a length of 24 hours. There is no pitch distortion, so you hear the timbres and harmonies of the piece at a glacial pace. It ends up being more of an ambient installation. To the right of this post is an excerpt from the opening (it takes awhile to start up - be patient!), and below is a video of the "real time" original version (note: not the same recording).
You can also stream the entire piece here. Enjoy!