Trusted by choir directors worldwide
"A milestone for choir work."
Ronny Schröter – Ensemble Manager at Cottbus Children's Musical
★★★★★
4.6 average · 60+ ratings on the App Store & Google Play
The cori app is a wonderful help and enrichment for every singer in the choir to learn their own voice in a targeted and correct way. Especially helpful - among many other features - I find the ability to adjust the volume of other voices as desired. That way, you're practically already practicing at home with the whole choir! 😍💕
Stefan Kuch, Singer
Happy Voices, ZeiskamI'm really happy with cori, I use the app regularly to practice concert songs. A cool feature is e.g. the high score for practice days, because it gives you extra motivation to practice. As part of the organization team, it's also helpful to see how many members are coming to certain events.
Christoph Claus, Singer & Organization Team
Schorle and Canto Allegro, ZeiskamTotally cool! There are so many things the app can do! The calendar, the challenges where I can select a specific passage... I think it's really great!
Lena Krüger, Choir Director
Jazzappeal, HS DüsseldorfThe cori app is a wonderful help and enrichment for every singer in the choir to learn their own voice in a targeted and correct way. Especially helpful - among many other features - I find the ability to adjust the volume of other voices as desired. That way, you're practically already practicing at home with the whole choir! 😍💕
Stefan Kuch, Singer
Happy Voices, ZeiskamI'm really happy with cori, I use the app regularly to practice concert songs. A cool feature is e.g. the high score for practice days, because it gives you extra motivation to practice. As part of the organization team, it's also helpful to see how many members are coming to certain events.
Christoph Claus, Singer & Organization Team
Schorle and Canto Allegro, ZeiskamTotally cool! There are so many things the app can do! The calendar, the challenges where I can select a specific passage... I think it's really great!
Lena Krüger, Choir Director
Jazzappeal, HS Düsseldorf„A fantastic app that covers everything about choral singing. My highlight: practicing while driving is so easy now — I just connect via Bluetooth or Android Auto, and bookmarks let me jump to the tricky passages.“
— Maria F.„Great for practicing regularly between rehearsals. I even use it while driving. Being able to turn individual voices up or down depending on what I want to practice is really helpful.“
— Carlala657„Really good. It keeps you accountable for practicing with its streak system — simple and easy to understand. 10 out of 10.“
— tico faster„I sing in two choirs and use the app regularly to practice. Sheet music, lyrics, SATB parts — everything's there. Fair warning, though: this app is seriously addictive!“
— Thomas Loester„Rocked the concert! No more paper sheet music, and the feature that checks whether you're singing the right notes is really handy.“
— luy9„Working with teenagers, organization is essential. With cori, hunting for lost files in the WhatsApp chat is over — everything is organized and to hand. The challenges and exercises keep our group improving every day.“
— José Noguera, CR„Cori is an all-around excellent app for choirs: clear calendar management, centralized sheet music and practice files, adjustable individual voices and a motivating practice streak with ranking. Intuitive, practical and a real relief for choir directors and members. Absolute recommendation!“
— RSniggy„Learning new songs has never been easier, in my opinion. Lyrics and sheet music are always available, no matter where you are. The ability to switch individual parts on and off is fantastic and really helps you become more confident in your own vocal range. You always have all the dates for rehearsals and concerts at a glance. Simply superb!“
— Martina Hetzler„A fantastic app that covers everything about choral singing. My highlight: practicing while driving is so easy now — I just connect via Bluetooth or Android Auto, and bookmarks let me jump to the tricky passages.“
— Maria F.„Great for practicing regularly between rehearsals. I even use it while driving. Being able to turn individual voices up or down depending on what I want to practice is really helpful.“
— Carlala657„Really good. It keeps you accountable for practicing with its streak system — simple and easy to understand. 10 out of 10.“
— tico faster„I sing in two choirs and use the app regularly to practice. Sheet music, lyrics, SATB parts — everything's there. Fair warning, though: this app is seriously addictive!“
— Thomas Loester„Rocked the concert! No more paper sheet music, and the feature that checks whether you're singing the right notes is really handy.“
— luy9„Working with teenagers, organization is essential. With cori, hunting for lost files in the WhatsApp chat is over — everything is organized and to hand. The challenges and exercises keep our group improving every day.“
— José Noguera, CR„Cori is an all-around excellent app for choirs: clear calendar management, centralized sheet music and practice files, adjustable individual voices and a motivating practice streak with ranking. Intuitive, practical and a real relief for choir directors and members. Absolute recommendation!“
— RSniggy„Learning new songs has never been easier, in my opinion. Lyrics and sheet music are always available, no matter where you are. The ability to switch individual parts on and off is fantastic and really helps you become more confident in your own vocal range. You always have all the dates for rehearsals and concerts at a glance. Simply superb!“
— Martina Hetzler
Who cori is for
One app for directors and singers
For choir directors
You set the music, and with cori practice tracks are created in minutes, rehearsals are planned and everyone stays in the loop.
Create practice recordings
Create practice recordings and TeachMes, then share them with your singers.
Prepared for the rehearsal
Rehearsal time for music instead of corrections with cori's exercises.
Organization without chaos
All appointments, notes and tools in one place, without an endless flood of chat.
For singers
Your part in your ear, your sheet music in your pocket and a practice partner that never runs out of patience.
Confident in rehearsal.
More confidence before rehearsal, with feedback and reminders.
Put an end to paper chaos
Never forget notes again, always everything digitally at hand
Always organized
Dates and info without chat floods, everything in one place.
Sell out your next concert
The concert is already in your cori calendar. Switch on cori Tickets and start selling in minutes. Earnings are paid out to your bank account automatically, with no new account.
Pay only per ticket sold: no subscription, no monthly fee
Reserved seating with a 2D & 3D seat map
Guest checkout: buyers pay by card, no sign-up needed
Live sales figures and an entry list for concert day
cori Tickets
Spring Concert
€18.00
Frequently asked questions
Download the app, create your choir and invite everyone with a link. Your first song is in within minutes, no training needed.
The director sings each part once in the app or uploads existing recordings. Even a single MIDI file is enough: cori turns it into a separate practice track per voice that everyone can mix louder or quieter.
Yes. Sheet music with shared annotations, rehearsal RSVPs, messages, polls and file storage all work with no audio at all. On top of that, cori has general exercises for ear, rhythm and voice that need no recordings at all. You can add practice tracks any time later.
No. If your singers can use a messaging app, they can use cori. In the Happy Voices choir, for example, members range from 14 to 83 years old, and every generation gets along with cori just fine. It runs on Android, iOS and in the browser, and we're happy to help you get started personally.
cori is GDPR compliant and hosted in Germany. We only store what the app needs to work, and we never sell data. The details are in our privacy policy.
The people behind cori
We stand in rehearsal every week ourselves
cori is built by people who sing in choirs, direct choirs and teach voice. Everything we ship passes the test in our own rehearsals first.
Ready to hear the difference?
Bring cori to your next rehearsal. Set up in minutes, free to try.
30 days free trial • GDPR compliant
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