SATB Arrangement App for Choir Directors
CantuStudio is an SATB arrangement app for choir directors and music teachers. You start with a melody and receive a four-part idea you can hear, inspect and export. Playback comes before rehearsal. Voice-leading review comes before you print. PDF, MIDI and MusicXML come after you decide the draft is worth taking further. The honest claim is speed on the first draft — not a finished professional arrangement without a musician in control.
People searching for an SATB arrangement app are rarely asking for a toy generator. They have a tune, a rehearsal date, and not enough evening left to voice four parts by hand. The useful search answer is a workflow: capture the line, generate a draft, listen, review, edit and export. CantuStudio is built for that loop. It does not replace taste, pastoral context, or the decision of what your choir can sing this week.
Generate SATB arrangement · Plans & pricing · Open the rehearsal kit
How the SATB arrangement app works
Bring a typed or pasted melody, MusicXML, MIDI, PDF or audio. Generate soprano, alto, tenor and bass as a draft you can inspect — not a sealed black box. You should see which voice has the tune, where the inner voices sit, and whether the bass is doing harmonic work or hopping tonic and fifth. Listen before the choir hears it. Then edit with human judgment.
The practical loop stays the same every week. Bring the melody or file. Generate a four-part draft. Review each voice. Listen before rehearsal. Export the files. An arrangement app that only dumps notes on a staff is not useful. The useful product is a reviewable SATB idea that still leaves the musician in control of what the choir sings.
Decorative motion on weak beats is a later conversation. Unresolved non-chord tones on strong beats are defects. Strong-beat validation takes priority over ornamental inner motion. If a downbeat pitch is not in the chord and does not resolve, treat it as something to fix before rehearsal, not as color.
Who it is for
Choir directors use the app to move from a hymn or anthem melody to a first SATB idea they can mark up before the room is full. Music teachers use the draft as a teaching surface: soprano, alto, tenor and bass relationships become visible, then the class reviews what works and what does not. Church musicians use it when the tune is already familiar and they need rehearsal files without pretending the model replaces judgment.
This page is not for someone who wants a one-click Sunday anthem. If you need a camera-ready score for print or publication, finish the work in your notation editor. If you need a faster, reviewable starting point before rehearsal, start here. Independent arrangers can use the same path when the missing work is the first four-part pass, not the last engraving pass.
Church choir use
Church choir is one of the strongest uses of an SATB arrangement app. A familiar hymn melody, a short anthem, or a line someone hummed after service can become a four-part draft you hear before the first tutti. That is the weeknight problem: the tune is known, the parts are not written, and rehearsal time is short. CantuStudio shortens the blank-page hour. It does not decide liturgy, copyright, or whether the piece belongs in this service.
Arrive at rehearsal with something to test, not a promise that the first pass is finished. Listen to each voice. Check whether the alto line sits where your section can sustain it. Decide if the bass is doing harmonic work or hopping tonic and fifth. Then export the files your choir already uses. A musician still reviews the result before the folder is printed.
Export PDF, MIDI and MusicXML
When the draft is good enough to take further, export the formats directors already use. PDF is the rehearsal folder. MIDI is practice and playback. MusicXML is the handoff to Finale, MuseScore, Sibelius or Dorico if you want to keep editing in a notation app. None of these exports is a claim that the file is camera-ready. They are the next step after a reviewable SATB idea.
Share the files the way your choir already works. Some directors print PDF into the folder. Some send MIDI for home practice. Some continue in a notation editor after MusicXML. The export step exists so the draft can leave the generator without locking you into one app. After you trust the draft enough to share, the rehearsal kit can put each voice in the singer’s pocket — still after review, not instead of it.
Voice-leading review before rehearsal
A draft that looks full on the page can still fail in the room. Parallel fifths and octaves, voice crossing, and ranges your altos or tenors cannot sustain will cost rehearsal minutes. The review step is there so you catch those issues early. The check can point at ranges, crossings and parallels. You decide whether that tenor line is singable for your section, whether the text stress still works, and whether the piece belongs in this service.
Keep the musical decision. Public claims stay conservative until a draft has been heard, reviewed and accepted by a musician. The app speeds the first pass. It does not certify a final arrangement. Safe public language is a faster draft and review workflow — not a promise of a professional score without runtime proof and human musical review.
Trial and pricing
Start a draft in the generator. Free includes a short no-signup demo (up to 16 notes) and a free account with monthly limits: 10 harmonizations and 2 MIDI exports. Paid Pro starts at R$24.90 per month in BRL, with yearly billing up to R$249.90. Pro unlocks unlimited drafts plus PDF, MIDI, MusicXML and the rehearsal kit. Sign in to subscribe. Exact current limits live on the English pricing page. This page does not invent a free-trial length, star ratings or traffic numbers.
If you want public-domain hymn starting points, use the SATB hymns hub. The SATB arranger and choir-director AI tool pages describe the same honest draft-and-review loop. Current safe positioning stays narrow: speed on the first SATB draft, with a human musician still in control.
SATB arranger · AI tool for choir directors · Plans & pricing · Rehearsal kit · SATB hymns
Questions before trying
Does CantuStudio replace an arranger?
No. The SATB arrangement app gives directors, teachers and arrangers a faster first four-part draft. You still listen, check ranges and decide what belongs in front of the choir. The final musical decision stays with the human musician.
What can I export?
Export PDF for the rehearsal folder, MIDI for practice or playback, and MusicXML for Finale, Sibelius, MuseScore or Dorico. Exports are the next step after a reviewable draft — not a claim that the file is camera-ready.
Can I use it for church choir music?
Yes. Church choir is one of the strongest uses: a hymn or anthem melody becomes a reviewable SATB draft before Sunday rehearsal. Teachers and independent arrangers use the same loop. A musician still reviews the result.
How do trial and pricing work?
Start a draft in the generator. Free includes a short no-signup demo and a free account with monthly limits. Paid Pro starts at R$24.90 per month in BRL. Current limits live on the English pricing page. Sign in to subscribe; this page does not invent a free-trial length.