My lyrics have no section tags. Does it matter?

You wrote the lyric somewhere else and pasted the text. No brackets, no labels, just the words in the order you wrote them.

It generates. It is fine. And the chorus arrives sounding exactly like the verse did, because nothing in what you pasted said that a chorus was starting.

What the sheet looks like with nothing tagged

Here is one written for this piece, eight lines, pasted as prose:

The bakery lights come on at four
I know the sound the shutter makes
You used to wait outside for me
with two coffees and no sleep
I still buy the second cup
I still buy the second cup
Somebody has to drink it
so it might as well be me

The free Suno lyrics check returns one finding on it, marked "Fix first":

No section tags. 8 lines will be sung as one block with the same energy
all the way through.

Underneath it, a button labelled "Start from a structure". You can also see the problem without any tool: lines five to eight are obviously a chorus, they repeat, and nothing on the page says so.

"One block with the same energy" is the part worth sitting with. The model is not refusing to build a chorus. It has eight lines of similar-looking text and picks one treatment for all of them, so the repeated lines get sung with the weight of the story lines, and the moment the song was supposed to lift is the moment it carries on.

Two tags fix most of it

Not nine. Two. The sections you have are a verse and a chorus, and naming them is the whole edit:

[Verse 1]
The bakery lights come on at four
I know the sound the shutter makes
You used to wait outside for me
with two coffees and no sleep

[Chorus]
I still buy the second cup
I still buy the second cup
Somebody has to drink it
so it might as well be me

Two mechanical details make the difference hold. The tag goes on its own line, with the lyric starting underneath rather than after it, and a blank line separates the sections so the boundary is unambiguous.

Same words, same order, same syllable counts. The finding is gone, and the model now has a reason to treat the last four lines differently from the first four. If your song has a third section that does a third thing, name that too; the count of tags should match the count of jobs, and no more. The longer shapes, nine sections and their jobs, are in nine sections, each with one job; most songs do not need them to get started.

The ending is the part the check is least sure about

Tag the two sections and a second, quieter finding takes its place:

The sheet ends on [Chorus]. Add [Outro] or [End] on its own line so the
song lands instead of fading out.

That one is marked "Consider" rather than "Fix", and it deserves a caveat the tool does not print. [Outro] is well attested: the community tag lists describe it as the closing section and people use it constantly. [End] is thinner than the finding makes it sound. No thread in our research demonstrates it forcing a clean stop, and the one comment recommending it does so in passing.

So take the advice, use [Outro], and treat the alternative as an experiment.

If you do not know the structure, borrow one

The other direction is to pick the shape before writing the words. Structure first means deciding how many sections and how long each one is, and then writing to that, which is a much easier brief than a blank page.

The check does a version of this on the way past. Under the findings it lists the public templates whose section sequence is closest to what you pasted, with a match percentage for each, so an untagged sheet still gets compared to a structure that already works. The button on the finding goes to the same place.

Note

A template is a starting shape, not a rule. Two verses and a chorus is a song; the rest of the sections exist because a particular song needed them.

What tagging does not do

It does not make your sections different from each other. Tagging a chorus that reads like a verse tells the model that a chorus is starting and gives it nothing to change, which is a writing problem the tags cannot reach.

It does not guarantee anything either. The best-known cheat sheet on the subreddit carries the reply that applies here as everywhere: keep in mind that it is Suno, and these may or may not work.

It also cannot see what you meant. A block of eight lines with no repeats might be one long verse or two short ones, and the check reads it as untagged either way; you are the only one who knows which.

And it has no opinion on the order. A sheet tagged verse, verse, verse, chorus passes every structure check in the tool and is still a strange song.

Paste your lyrics, it takes ten seconds: heho.ai/tools/suno-lyrics-check