Singability Vowel Picker

Singers do not hold consonants — they hold vowels, and some vowels hold beautifully while others die on a long note. Open “ah” and “oh” ring; a closed “ee” thins out; an ending like “-it” just stops. This tool scans each line, scores the ending vowel of every word, and points at the word a singer would actually want to sustain.

Use it whenever a melody note lands long: put the open-vowel word on that spot and the line instantly sings easier.

Line-art illustration for this songwriting tool

Singability Vowel Picker


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How to use it

  1. Paste the line or chorus, one line per row.
  2. Press Find hold vowels. Each line shows its best hold word and which vowel it ends on.
  3. On long melody notes, place those words at the note — or swap in a synonym with an open vowel.
  4. Lines with no strong hold are candidates for a rewrite of the final word.

Best use cases

  • Choosing which word to sustain on the money note of a chorus.
  • Rewriting a bridge line that a vocalist keeps running out of air on.
  • Adapting rap lyrics for a sung hook — pick the one word to actually sing.
  • Voice teachers showing students why “go” sails and “it” dies.
Pro tips

  • “Ah” and “oh” are your sustain vowels; “ee” is bright but thin; line endings like “-t”, “-k” and “-s” stop the note dead.
  • When two synonyms fit the meaning, pick the one ending in an open vowel — meaning first, vowels second.
  • One strong hold per line is enough; a line of held notes is a choir warm-up, not a pop lyric.

What good looks like

A singable line ends on a word you could hold for two beats without embarrassment: an open vowel, a soft ending, a concrete image attached. Scan your chorus endings — if every line ends in “it”, “up” or “that”, you are fighting your own melody.

Frequently asked questions

Does it score middle vowels?

It focuses on word endings, because that is where held notes and line-ends usually land. Middle vowels matter for runs and melisma — sing the line and let the melody tell you which vowel actually needs the room.

What about diphthongs like “ay” or “eye”?

They score mid — bright and usable, but they move through two shapes, so they suit shorter holds. For a long sustain, “ah” and “oh” stay stable where “ay” wants to resolve somewhere.

Is this for rap too?

Yes — rappers use it to place the one sung note in a melodic hook, or to pick which end-word survives a held beat. Even in straight rap, open vowels punch harder at bar ends than closed ones.

Anything uploaded?

No — pure browser text analysis. See the disclaimer.

Which vowels are best for holding?

Open back vowels — “ah” as in “go” or “call” — ring the longest with the least effort. “Ee” and “ay” are bright but thin; “oo” is dark and quiet; and consonant endings stop the note entirely.

Keep going

Pair this tool with the rest of the workshop:

Hook Earworm ScorerCheck the hook the vowels sit in.
Syllable CounterBalance line lengths first.
Lullaby guideSinging-first writing.
Built and maintained by Jordan Blake, the maker of PhraseBend. This tool runs entirely in your browser — nothing you type leaves your device. Request a feature.