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Circle Theory: A Look at the Circle of Fifths Reference App for iOS
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Circle Theory: A Look at the Circle of Fifths Reference App for iOS

Spending time exploring the circle of fifths is a useful exercise for seeing the relationships between notes and key signatures. Circle Theory, by Artsiness, is a great iOS app for referencing and visualizing the circle of fifths. The app’s interface has the primary circle displaying the current Tonic note/key signature. The additional information options are shown in the inner circle,...