Isn't that the coolest?
I am totally intrigued by this and want to get the book now so I can try some of the songs.
Check out a great post By Malcolm Jones at The Daily Beast about this: Beck's Album Song Reader Is All Sheet Music. We Take It For A Spin
The publisher, McSWEENEY's also setup a website where you can go to listen to people's interpretations of the sheet music at songreader.net
You can also read a Q&A with Beck about Song Reader.
If you join the songreader.net website you can also download one of the song's (Old Shanghai) sheet music as a PDF so you can check out the music yourself.
Very cool way to release an album. I'm going to read Old Shanghai now.