Song form: verse, chorus, bridge, AABA – free course

Pop songs, jazz standards, film themes and many "modern" piano pieces rely on forms inherited from songwriting. They are designed for one thing: to be remembered on first hearing. Learning to build them means learning to balance repetition and surprise.

1. Verse / chorus / bridge

Section	Role	How to write it
Intro	Set the mood	2 to 4 bars, often the accompaniment alone or a fragment of the chorus
Verse	Tell the story, prepare	Lower or middle register, speech-like melody, contained energy
Pre-chorus (optional)	Build tension	Faster-moving harmony, rising melody, stop on the dominant
Chorus	The emotional peak, the "hook"	High register, long notes, striking rhythm, always the same
Bridge	Bring something new before the last chorus	Different chords (often starting on IV or vi), different rhythm

A common plan: Intro – Verse – Chorus – Verse – Chorus – Bridge – Chorus – Chorus – Ending.

2. Verse and chorus: a contrast of energy

Here is a verse in A minor (Am–F–C–G). The melody stays in the middle register in even values, as if it were speaking. The left hand just plays roots and fifths.

M:4/4
L:1/8
Q:1/4=88
K:C
%%staves {RH LH}
V:RH clef=treble
V:LH clef=bass
[V:RH] "Am"A,2 C2 E2 E2 | "F"F2 E2 C4 | "C"E2 G2 G2 E2 | "G"D8 |]
[V:LH] A,,4 E,4 | F,,4 C,4 | C,4 G,4 | G,,4 D,4 |]

And here is the chorus (C–G–Am–F). Everything steps up a level: the melody jumps into the high register, it uses a repeated syncopated figure ("E D C…") that acts as the hook, and the left hand switches to pulsing eighth notes.

M:4/4
L:1/8
Q:1/4=88
K:C
%%staves {RH LH}
V:RH clef=treble
V:LH clef=bass
[V:RH] "C"e2 dc- c4 | "G"d2 BG- G4 | "Am"e2 dc- cB A2 | "F"A2 c2 c4 |]
[V:LH] C,2 G,2 C2 G,2 | G,,2 D,2 G,2 D,2 | A,,2 E,2 A,2 E,2 | F,,2 C,2 F,2 C,2 |]

Notice how the chorus ends on F, hanging in the air: it calls for the chorus to repeat or for the next verse. The very last chorus will end with G → C to close the song.

3. AABA form (32 bars)

This is the form of the great Broadway and jazz standards: four 8-bar sections.

A (8)	A (8)	B (8): the bridge	A (8)
The theme, ends open (half cadence)	The theme again, ends closed (perfect cadence)	New key or new chords, often the subdominant (F in C)	Return of the theme, conclusion

The listener hears the theme three times out of four sections: they cannot help remembering it. The bridge provides breathing space and makes the final A all the more welcome.

4. The hook: the line people hum

A good hook is short (1 to 2 bars), rhythmically distinctive (a syncopation, a repeated note) and placed at a strategic point (the start of the chorus). Repeat it at least twice, possibly as a sequence. If you catch yourself humming it the next day without meaning to, you've won.

Tip: write the chorus first. It is the most important part; the verse is then built to lead into it, preparing it with a lower register and more restrained energy.

Common mistakes: a verse that is more spectacular than the chorus (the peak comes too early); a chorus in the same register as the verse (no "lift-off"); a bridge that reuses the verse chords (nothing new). And at the piano: a left hand that plays the same thing from start to finish. At least vary the density between verse and chorus.

Your workshop

Pick a chorus progression on the chord progressions page (for example C–G–Am–F) and another one for the verse (for example Am–F–C–G).
Improvise over the pop backing track in C until you find a 2-bar hook. Record it straight away in the piano roll.
Write an 8-bar chorus around that hook (repeat it, vary it, end with G → C).
Write a lower, calmer 8-bar verse ending on G (half cadence) to launch the chorus.
Add a 4- to 8-bar bridge starting on F or A minor, then assemble: Verse – Chorus – Bridge – Chorus. Check that the high point of the piece really is in the last chorus.