Indie band Dry The River came up with an extremely unique way to advertise the release of their debut album "Shallow Bed"-they hung up string art posters all over London that can be listened to via attached can, like a schoolyard string phone with a band on the other end of the line.
The posters are a great fusion of high tech and simplicity, and they look quite cool to boot. Watch the video and you'll see how these minimalist marvels were constructed, with each one taking about 20 hours to complete. Now that's doing self promotion like a boss!
--via Super Punch
Though I would've liked to see a video that shows what you can actually hear when you listen to one of the tin cans.