What is the Circle of Fifths?

The Circle of Fifths is a visual tool that shows the relationship between musical keys, chords, and key signatures. It arranges the 12 notes of the chromatic scale in a circular pattern, moving in perfect fifth intervals.

This powerful music theory tool helps you understand:

• Key relationships
• Relative major and minor scales
• Chord families
• Sharps and flats progression

Musicians use the Circle of Fifths to compose songs, build chord progressions, modulate between keys, and improve improvisation skills.

How to Use This Tool

Select a Key

Click on any key around the circle (C, G, D, A, E, etc.). The selected key instantly highlights its position and related chords.

Explore Chord Families

View the complete diatonic chord family for the selected key, including:

• Major chords
• Minor chords
• Diminished chords

View Instrument Visuals

Instantly see:

• Guitar chord diagrams
• Staff notation
• Piano key highlighting

This makes it easy to apply theory directly to your instrument.

Understand Relationships

See:

• Relative minor key
• Closely related keys
• Harmonic structure within the scale

Learn & Apply

Use the interactive wheel to:

• Build chord progressions
• Discover key transitions
• Practice scale harmonization
• Improve songwriting and improvisation

With full visual guidance and real-time updates, this Circle of Fifths app makes complex music theory simple, intuitive, and practical for musicians of all levels.