Circle of Fifths: Explore Keys

See how keys connect. Hear why they work together.

Circle of Fifths turns a familiar music theory diagram into something you can explore directly. Choose a key, see its notes and signature, and listen to the relationships around it.

The circle gives you a clear view of neighboring keys and relative major and minor keys. Instead of treating them as separate facts to memorize, you can see how each one relates to the others.

Chords are part of the picture too. Explore which chords belong to a key and hear them in context. This helps connect the diagram to the progressions you play, write, and recognize in songs.

You can use it to study key signatures, look for a change of key, or check an idea while writing. A small movement around the circle can open up a different musical direction.

Key Features:

• Interactive circle of fifths
• Key signatures and note relationships
• Related chords and musical playback
• Relative major and minor keys
• Explore connections between keys

Circle of Fifths works for learning, songwriting, and teaching. You choose a key, listen, and start to understand how the map connects to real music.

The core tools are free to use. An optional paid No Ads plan removes Melodic Mind promotions.

You explore, listen & create - That’s the core idea behind Melodic Mind. Let music feel natural again.

Recent changes:
Explore musical keys with Circle of Fifths. Includes an optional Ad-Free subscription.