Singability, measured — before you embarrass yourself in the shower.
Paste a verse and the score rates how easy it is to actually sing aloud: syllable density, breathing pauses, big words, and rhyme continuity. It flags the exact lines where the tongue trips — the consonant clusters, the alliteration pile-ups, the run-on breaths.
Your lyric
Paste a verse or chorus, one line per row. Eight to sixteen lines reads best.
Heuristic read, not a verdict. Some great lines are deliberately hard to sing — this tells you where the risk is.
Flow report
Score runs 0–100. Higher means easier to sing.
What makes a line easy to sing
A line that reads great on paper can fall apart when you open your mouth. Four things decide whether it rides or fights you.
Syllable density
Short words over short syllables. Around 1.4–1.7 syllables per word is the singable sweet spot. A line stuffed with three-syllable words leaves no room for the melody to move.
Breathing pauses
Commas, periods, em-dashes tell the singer when to inhale. Zero pauses in a long line means you hold one breath forever — two many pauses and the line stutters instead of flows.
Big words
Multi-syllable words pack ideas but cost breath. The earworms are almost entirely one- and two-syllable words. A line with three big words in a row is hard to land on a beat.
Rhyme continuity
A run of lines ending on the same rhyme gives the singer a runway. One rhyme after another lets the melody glide; a line that breaks the run needs a reason.
Singable line vs. tongue-twister
Same job — four lines — one you can sing first try, one you trip over on line two.
| Fights the singer | Rides the beat |
|---|---|
| “Peter Piper picked a peck of pickled peppers”all same sound, no breath, cluster after cluster | “Hold my hand, stay with me”short words, a comma to breathe, one clean line |
| “The sixth sick sheik’s sixth sheep’s sick”four consecutive plosives, no vowel room | “You and I, we run free”two beats, soft consonants, rhyme on the tail |
The right column isn’t simpler for its own sake — it leaves the singer a place to stand. The left column is a word-count contest that the voice loses.
How to use it
Ten seconds, no account, no upload — your lyric never leaves the page.
- Paste a verse or chorus, one line per row
- Hit Score the flow
- Read the flagged lines — the tags tell you whether to split, simplify, or add a breath
What this score can’t do
It measures phonetics, not melody. A line that reads like a tongue-twister can be saved by a slow melody that stretches every syllable, and a perfectly singable line can be ruined by a fast one. It also can’t hear your accent — what trips an American singer may roll off a British one.
Use it to find the lines you’ll stumble on in the demo. If a flagged line feels fine when you sing it out loud, trust your voice over the score.
About this tool
Built by Alex, the one-person operation behind FreeLyricsAI. I kept writing lines that looked great on the page and choked on me when I recorded demos — too many syllables, one breath held too long, a string of hard consonants. This score is the list of my own mistakes, turned into a meter.
It runs entirely in your browser so it stays a writing tool. The syllable and cluster rules live in the source — steal them, argue with them, and tell me which flag was wrong.