The most terrifying thing about learning an instrument is the moment when you have to play in front of an examiner. It's also a moment that future generations might be spared if the new Scalebook app is any indication. The software is designed to help trainee violinists improve their scales in preparation for the big day. What's interesting, however, is that the app can listen to your playing via the iPad's microphone and provide feedback. There's even a mock exam setting where you'll play under test conditions and receive a written report on your performance. Crucially, this information is set out in the same style and format as you'd receive from a flesh-and-blood official from the Associated Board of the Royal Schools of Music.