18.4 · Cadences & Color

The key change

A song can move its home. When the chords settle around a new home note and stay there, the key has changed: musicians call that move a modulation. Pop does it two ways: the sudden lift and the prepared pivot.

Same chords, new home

The same loop twice: home is C, then everything moves up one semitone and home is D flat. Every chord keeps its job; only the letter names change.

C
G
Am
F

The pop loop in C. The last chord leans back toward C, and C is where it rests.

Db
Ab
Bbm
Gb

The same numerals one semitone up. Nothing inside the loop changed, so it sounds the same, just higher: every pull now aims at D flat.

The direct lift

The classic final-chorus move: the whole loop jumps up a half or whole step with no preparation. Chord five simply lands higher, and every chord after it serves the new home.

C
G
Am
F
D
A
Bm
G

Four chords in C, then the same four in D. The seam sits between chord four and chord five: no pivot chord, just the jump.

The pivot: the new V leads the way

In 18.3, D7 pushed into G and C took the music back. A pivot key change keeps the push and drops the return: land on G, cadence in G, and G is the new home.

C
D7
G
C

18.3's move: D7 leans into G, then C takes over again. C major from start to finish.

C
D7
G
D
G

The same D7 under its new name: the new key's own V7. The music cadences in G and settles, so G takes I's color.

Game · Stayed or moved

1 / 6

One loop, played twice through. Did home stay where it started?

Listen first. Then answer.

Quiz

1 / 3

A key change means…

Score 100% on every quiz and game to complete this lesson. A perfect run sticks: a later miss never undoes it.The map of a song →