Circle of Fifths

The Circle of Fifths is the map every working musician carries in their head — here it’s interactive: click around it and the relationships light up.

What it shows you

• Key signatures — how many sharps or flats each key carries, and why neighbours share most of their notes.
• Relative majors/minors — the minor key hiding inside every major signature.
• Movement — why V→I feels like coming home, and why songs modulate to neighbouring keys so smoothly.

Pro tips

• Transposing for a vocalist? Count the steps around the circle once, and move every chord by the same amount.
• Writing a bridge? Borrow from a neighbouring key on the circle — close enough to feel natural, far enough to feel fresh.