This app can teach you the simple theory behind thousands of songs, show you how to play 'in a key' and help you learn to sing on pitch.
Any concepts you learn in the app are totally transferable to a real piano, guitar or any other instrument.
When you understand how to use the major scale you'll be able to easily compose music for yourself. It is so much easier than people realise.
Visit scalenumbers.com or click on the links button in the app for more information.