Why Suno skipped your verse, and how to see it coming

You wrote four lines you liked. Suno sang the first two, ran the third and the fourth together, and was into the chorus before the last word landed.

Somebody on r/SunoAI described a take they otherwise liked, where the model "blurs the end of one line and the beginning of the next line together at one point". Regenerating changed nothing, because there were too many words to fit the time. The first reply guessed the same cause: the structure Suno had settled on could not hold that many words.

This is not new and not tied to one release. The same complaint runs through threads from October 2024, written on V3.5, where somebody describes it from the other end: the model decides to repeat a verse it has no chance of fitting in.

Count the syllables in the line

Ten one-syllable words sing comfortably. Six words with three of them three syllables long do not. Word count tells you very little; what the melody has to carry is syllables, line by line.

You can count on your fingers, and for one verse that is the fastest thing to do. The free Suno lyrics check counts the whole sheet instead: paste the lyrics and the Style field, and it prints the count next to every line, grouped by section. The tip beside that panel reads "Left number: syllables in the line, red when Suno will rush it."

12 syllables is where the marking starts

Suno publishes no line length. Suno Down's nine rules put verse lines at 8 to 12 syllables and chorus lines at 6 to 10, allow 12 to 16 in a bridge, and ask that lines doing the same job stay in the same range.

The check draws its line at the top of that range: "Lines over twelve syllables (sixteen in rap sections) are flagged: that is where Suno rushes." Treat 12 as a marker rather than a law. Under it a line can still be rushed when the whole section runs long, and over it you are asking the melody to find room it may not have.

Note

Rap and spoken sections get more room. When the section tag carries the word rap or spoken, the threshold moves from 12 to 16, because delivery there is closer to speech.

Split the line and keep the words

Here is a verse I wrote for this piece, checked with the Style field "indie folk, warm, acoustic guitar, female vocals, 95 bpm". The numbers on the left are the check's gutter.

[Verse 1]  4 lines
17  I've been driving back to the place on Aldridge Road since the funeral
15  and each time I get there I forget the thing I came to say
16  The kitchen radio is still tuned to the station that she liked
 7  I keep the engine running

Three findings come back, in the words the tool prints:

Fix first   Line 2   17 syllables. Past 12, Suno starts rushing or dropping words. Split the line in two.
Fix         Line 3   15 syllables. Past 12, Suno starts rushing or dropping words. Split the line in two.
Fix         Line 4   16 syllables. Past 12, Suno starts rushing or dropping words. Split the line in two.

Each finding carries a button, "Fix the meter in Heho", with a line under the list: "Free account. Your lyric comes with you into the editor." Nothing below needed it. Split where you would breathe:

[Verse 1]  7 lines
 6  I drive back to the place
 9  on Aldridge Road since the funeral
 8  I make it as far as the porch
 8  and forget what I came to say
 8  The kitchen radio is on
 7  tuned to the station she liked
 7  I keep the engine running

The verse lost two syllables and none of the story. The check's summary went from "9 lines · 3 sections · 87 syllables · about 0:53 at 95 BPM" to "12 lines · 3 sections · 85 syllables · about 0:51 at 95 BPM", and that is the part worth reading twice: the section still asks for the same 50-odd seconds of singing. What changed is that no line has to move at twice the pace of the one under it.

Read the verse aloud at the tempo before you paste

Set a metronome to the tempo in your Style field, read the verse at that speed, and time it. The check runs the same arithmetic: about 1.9 syllables a second at 95 BPM, 2.4 at 120, plus 15 percent for phrasing.

If you cannot say the line in one breath at that tempo, do not hand it to a singer who has to.

What the counting does not fix

Some days it is not your sheet. In February 2026 a writer spent days on generations that ignored the lyrics and ran to 7:59, and the replies are people describing the same week, one of them at seven bad takes in ten. No count prevents that.

Length is a separate problem. Splitting lines keeps the syllables where they were, so a sheet too long for one generation stays too long; if the song stops mid-lyric, cut the sheet or split the song, and do not expect shorter lines to buy time.

The counts are English first, as of September 2026. Syllables and rhyme labels also work in French, Spanish, Portuguese, German and Italian, and the pronunciation and cliché lists are English for now, which the page says under the language selector.

A count also cannot promise you a good take. It will tell you a section has seven lines without telling you it should have been two sections, and it knows nothing about the melody Suno is about to choose. Change the sheet, generate once, and listen.

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