Tonara is the world’s first interactive sheet music app. It shows your position on the score as you play, and turns the pages for you just in time. The app continues to track your performance even if you change tempo, make mistakes, repeat a section, etc., and works well even in a noisey environment. The app is bundled with a few musical scores, and additional scores can be purchased using the built-in music store. The app is available for the iPad, and an Android version will follow in Q1 2012.