Key Bridge
Pick where you are and where you want to go. See the chords the two keys share, learn the routes between them, and build a progression that crosses the seam like it was always meant to.
The idea
A key change lands well when the listener's ear is escorted, not shoved. Two things do the escorting: pivot chords, which belong to both keys at once and quietly switch allegiance mid-song, and dominants, which point at a new home so hard the ear expects the arrival before it happens.
How to read it
Every chord chip wears its job titles: "6m in C · 2m in G" means the same chord holds a different office in each key. That double life is the whole trick. The routes below are ready-made crossings, ordered from smoothest to boldest, and each one can be loaded into the builder and edited.
How to use it
Start with a route, then make it yours: stretch the opening with more chords from the left palette, delay the arrival, or repeat the bridge chords to build tension. Rule of thumb: the fewer notes two keys share, the more preparation the change wants. Or none at all, if drama is the goal.
C → E: middle distance: fewer shared chords, so the dominant does the heavy lifting.
None. These keys are strangers, which is its own kind of freedom: use the dominant route, or hop through a middle key first.
The two-five lift
Borrow the classic jazz runway: the 2m and 5⁷ of E point so strongly at the new key that the landing feels inevitable, even when F#m is a stranger to C.
The straight dominant
No preparation, just authority: play the 5⁷ of the new key and resolve. Works between any two keys on the wheel. The further apart they are, the more dramatic it sounds.
Key change generator: modulate smoothly with pivot chords
Key Bridge helps you change key in a song without it sounding abrupt. It finds pivot chords that belong to both the old key and the new one, labels the role each chord plays in each key, ranks the smoothest routes, and lets you build and hear the change.
How to change key with a pivot chord
- Pick the key you are starting in and the key you want to reach.
- See the pivot chords that live in both keys, each labeled with its role in both.
- Choose a route and build the progression, then play it back to hear the transition.
Frequently asked questions
- What is a pivot chord?
- A pivot chord is one shared by two keys. Because it belongs to both, it lets the music slip from one key into the next without a jarring jump.
- How do I change key in the middle of a song?
- Move through a pivot chord into the new key's dominant chord, then resolve to the new home chord. Key Bridge builds this route for you.
- Do I need to know music theory to use it?
- No. Every chord is labeled with its role, so you can see and hear why the change works.