The App that helps you to learn all major and minor keys fast!! It is a must have app for anyone studying music and is aimed at students with a basic to advanced level.The circle of 5ths is a handy tool for music students and musicians. It is a diagram, which consists of dozens of keys, used in music theory that helps students to understand the key signatures and their relationships.Memorizing and visualizing the diagram is highly recommended. Features: – Design: a picture is worth a thousand words.- Runs fast: instantly displays all keys and exits quickly.- Works in both portrait and landscape modes.- Complete Key signatures with sound.Created by musician/music educator.Happy learning!