A rhyme scheme is just the pattern of which lines rhyme with which. It sounds like a poetry-class topic, but it's one of the most practical tools you have. Change the scheme and the same words feel faster, slower, warmer or more tense.

Here are the schemes you'll use most, with short example lines written for this article, and a few notes on when each one earns its place.

How the letters work

Each new rhyme sound gets the next letter of the alphabet. The first line's ending is A. If the second line rhymes with it, that's A too. If it doesn't, it's B. And so on down the section.

Some writers use X for a line that doesn't rhyme with anything. So ABCB is sometimes written XAXA. Same pattern, different label.

The letters reset for each section. Verse one might be ABAB and the chorus AABB. That contrast is often the point.

AABB: couplets

The porch light's on, the screen door's wide (A)
I left a key out by the side (A)
The dog still waits beside the gate (B)
like you were only running late (B)

Every two lines rhyme. The payoff comes fast and often, which makes couplets feel settled and sure of themselves. They're great for choruses, hooks and anything you want people to sing back after one listen.

The risk is that they can feel sing-song if the rhythm is too even. Vary line lengths, or let one line run long, to keep it from ticking like a clock.

ABAB: alternating rhyme

I drove past the house on Sunday (A)
the swing set's painted blue (B)
I almost knocked, but someday (A)
is all I ever do (B)

Lines one and three rhyme, and so do two and four. The listener has to hold a sound for a line before it pays off, which gives the section a woven feel. It's a natural fit for verses that tell a story, because each rhyme pulls you forward into the next thought.

Notice that "Sunday" and "someday" are a slant rhyme. ABAB tolerates slant rhymes well, because the gap between them softens the match.

ABCB: the songwriter's default

There's sawdust on your jacket (A)
and paint along your hands (B)
you built a room for someone (C)
who never understands (B)

Only lines two and four rhyme. Lines one and three are free. This is probably the most common pattern in songs, and for good reason: it gives you two lines where you can say exactly what you mean without bending for a rhyme, and still lands a rhyme where the ear expects it, at the end of the section.

If your verses feel forced, try loosening them to ABCB. You'll often find the honest line was waiting in the spot you'd been forcing a rhyme into.

AAAA: monorhyme

Turn it up, we're not done yet (A)
spend it all, there's no regret (A)
one more round, I'll take that bet (A)
this is the night we don't forget (A)

Every line rhymes on the same sound. It builds pressure fast, which makes it useful for a pre-chorus or a chorus that wants to feel relentless. Over a whole song it gets tiring, so use it for a section, not a verse after verse.

ABBA: enclosed rhyme

I kept the letter that you wrote (A)
I read it when the house is still (B)
I swore I wouldn't, but I will (B)
I know each line, I know each note (A)

The outer lines rhyme with each other and wrap around a couplet in the middle. The return to the A sound at the end feels like coming home, which suits songs about memory, circling back or being stuck. It's less common in songs, so it can make a section stand out.

AAAB and the tail line

Three lines on one rhyme, then a fourth that breaks the pattern. The break makes the last line pop, so it's a good spot for a title or a twist. If you repeat the B line at the end of every section, it becomes a refrain.

Internal rhyme

Slow down, the whole town's sleeping
and the street lights keep their secrets in the rain

Internal rhyme happens inside the line, not just at the end. "Slow down" and "whole town." "Sleeping," "street," "keep" and "secrets." It adds texture without changing the scheme, and it makes a line feel more crafted on a second listen.

Internal rhymes don't get a letter of their own. When you label a scheme, you're usually only labelling line endings. But they're worth hearing on purpose, because they're doing a lot of the work.

Mixing schemes across a song

The real power comes from contrast. A few patterns that work:

Loose verse, tight chorus. ABCB verses that tell the story, then an AABB chorus that locks in. The chorus feels like arrival.
Monorhyme lift. An AAAA pre-chorus that builds tension, released by a chorus on a new sound.
Break it once. Keep a scheme steady all song, then drop a rhyme on purpose in the last line. When everyone expects the rhyme, a missing one gets noticed.

Whatever you choose, be consistent within a section. If verse one is ABAB, verse two should probably be ABAB too. Listeners learn the pattern quickly, and they notice when it slips by accident.

Seeing your scheme

The easiest way to learn schemes is to mark up songs you're working on. Write the letter at the end of each line and look at the shape. You'll spot verses that drift, choruses that don't land and rhymes you didn't realise you'd written.

Lyric Genie's web app can do this for you. Turn on Rhyme colors in the View menu and rhyming words are tinted by sound, so each rhyme group gets its own colour, in the order they first appear. Turn on Rhyme scheme and every line gets its letter in the margin, in its group's colour. It judges rhymes by sound, not spelling, so near rhymes at the ends of lines get picked up as well as perfect ones.

It's a quick way to check a verse against the one before it, or to see whether a chorus is as tight as it feels. See it in the web app, and open one of your own songs with the colours on.

Rhyme Schemes Explained: AABB, ABAB, ABCB and More