From Paul McCartney to Irving Berlin, the list of songwriters who famously never learned to read music before hitting it big is a long one indeed. Why? Because it's hard, mostly. Of course, they've managed to have successful careers as songwriters, even without the aid of an iPhone app that could read music for them. Surely they could have found some use for the new app from Kawai, which scans music notes from sheet paper and plays them back in real-time or with a delay, should you so choose. The app is available in the Japanese App Store ¥350 ($4.50). Japanese language video of the app in action after the break.