Event Schedule and Stackapella, for singers Book the lesson. Learn the part.
Event Schedule keeps a voice teacher's lessons and a choir's rehearsals and concerts, where people book and see every date. Stackapella is where singers learn their part in between, with a guide voice and feedback on every note. Use them side by side today, and soon as one.
Pick your part. The week is yours.
Four bars, like the four voices of a choir and the four in Stackapella's mark. Press one and follow your part through a singer's week: the dates in Event Schedule, the practice in Stackapella.
Your hours in one, their homework in the other.
Students book the lesson from the hours you keep in Event Schedule. Between lessons they practise in Stackapella, on what you sent them.
In Event Schedule
TodayThe hours you teach, and the page students book them from.
- Lesson types with your weekly hours, date overrides for the weeks you are away, and buffers between students.
- A booking page of your own. A student picks an open time and gets a calendar invite, a reminder about a day before, and a private link to move or cancel it.
- Sync with Google Calendar or Outlook, so a gig or an appointment there takes its time off the page.
- Put a price on a lesson and take it through Stripe, PayPal, Payfast or a payment link, with no platform fee.
One free lesson type on the free plan; more types and a price need Pro at $5 a month. On eventschedule.com the booking emails go out through your schedule's own email settings. Appointments
In Stackapella
TodayThe practice between lessons, on what you set.
- Warm-ups you build in a minute and send by link. Each one opens in the student's own range, which they can move lower or higher.
- Short courses to set between lessons: Vibrato, Range and registers, Breath and stamina, and Perfect your pitch. Every lesson is free.
- A picture of their own pitch as they sing, so they practise against something better than memory.
When the two are connected
Not open yet. This is what the connection is being built to do for a teacher.
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Offer your lesson types in Stackapella
Connect your schedule once and pick which lesson types to offer. Your hours, buffers and calendar sync stay in Event Schedule, where you already set them.
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Singers book without leaving
Your next open times appear on your Stackapella profile, in the singer's own time zone, and the booking lands in Event Schedule like any other.
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Changes go both ways
A lesson you move or cancel in Event Schedule moves or cancels in Stackapella too, and the singer is told there.
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Around the lesson
Before it, the singer can attach a take of what they want to work on. After it, you can add notes, voice notes and exercises to the same lesson.
Coaching is coming to Stackapella, from vocal coaches it approves. Read about coaching there
Rehearsal is for singing together.
Run the season in Event Schedule: every rehearsal and concert, with tickets for the ones that sell. In Stackapella, each singer learns their part at home first, and you see who is ready before Thursday.
In Event Schedule
TodayThe season: every rehearsal and concert, and who comes.
- The whole season on one schedule: a weekly rehearsal as one repeating event, with the weeks off skipped and the extra ones added.
- Concerts with tickets and a door scanner, or free registration with a limit on places.
- Your schedule on the choir's own website, and a newsletter to the people who follow it.
- A date only the choir should see, kept off the public calendar.
Events and free registration are free; tickets with a price need Pro. Recurring events
In Stackapella
TodayThe parts, learned at home before the room fills.
- Choir groups, free: share a song, give each singer a part, and see who has started it and who has recorded it. You never see their recordings or their contact details.
- Part-by-part learning tracks of one song you are rehearsing, made for your group free on request.
- Each singer learns their part at home, a phrase at a time, and sings it with the other parts playing.
Choir groups are for singers 18 and over.
When the two are connected
Not open yet. This is what the connection is being built to do for a choir.
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The next rehearsal, in the group
A Stackapella group shows the next rehearsals and concerts from your schedule, with what to practise for each: the alto in Danny Boy, two phrases to go.
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The songs, on the event page
Link the songs to a concert in Stackapella and its page in Event Schedule shows them with a player and a Learn your part link.
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Your members, invited in one step
Invite the people on your schedule's team to the Stackapella group at once, and give out the parts.
Singing in the choir rather than leading it? Learn your choir part at home
Two apps, one set of times.
Your times are written down once, in Event Schedule, and Stackapella reads them from there. This is how it is being built.
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Sign in and approve
In Stackapella's settings, Connect Event Schedule sends you to Event Schedule to sign in and approve, and then you pick the schedule. There is no key to copy.
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Only what it needs
Stackapella asks for named parts of your account, such as reading your schedules and booking lessons, never the whole of it. You can take that back from Event Schedule's settings at any time.
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Your calendar stays put
Hours, buffers, calendar sync, reminders and your public pages stay in Event Schedule. Stackapella reads them; it does not keep a second copy to drift.
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Disconnect without losing a lesson
Lessons already booked stay booked in Event Schedule, with their invites and links. Only the offer to book in Stackapella goes away.
Stackapella questions
What is Stackapella?
A web app for singing harmony. A singer learns a part by ear from a guide voice, sees which notes landed as they sing, and can record every part of a song in turn, lined up exactly in time. It has a free course from a first note to four-part harmony, a warm-up builder, and choir groups where a director shares songs and gives each singer a part. It comes from the maker of Event Schedule and Invoice Ninja.
Can I use the two together today?
Yes, side by side. Your lessons, rehearsals and concerts go on your Event Schedule schedule, where students book a lesson and the choir sees every date. Your singers practise in Stackapella between them, in a choir group you started or from a warm-up you sent by link, and you can put those links in an event's description so they sit beside the rehearsal they are for.
When does the connection open?
It is being built now, and this page will say so the day it opens. Until then nothing on Event Schedule changes: lessons are booked on your own booking page and rehearsals live on your own schedule, which is also where the connection will read them from.
Who is paid for a lesson booked through Stackapella?
You will be, through Stackapella's checkout, and the booking will reach Event Schedule already marked as paid there, so it is never charged twice or invoiced again through an Invoice Ninja connection. A lesson booked on your Event Schedule page is paid as it is today, into the payment account you connected, with no platform fee.
Do my singers need an Event Schedule account?
No. Your schedule page is public, so anyone can see the rehearsal and concert dates, and a student books a lesson with a name and an email address, with everything after that run from a private link in their email. Stackapella has accounts of its own for the singers who practise there.
Which plans do I need?
On Event Schedule's free plan you can run a choir's whole season of events and offer one free lesson type. A price on a lesson, more lesson types, or tickets with a price need Pro at $5 a month, with no platform fee on any of them. On Stackapella, choir groups, the course and the warm-up builder are free. The plan the connection itself needs will be on this page when it opens.
Can I selfhost either one?
Both. Event Schedule and Stackapella are open source and each can run on your own server. A selfhosted Event Schedule will connect by an API key and the address of your install, pasted into Stackapella's settings, because there is no sign-in to approve on a server we do not run.
Keep exploring
Appointments
Write your hours down once and let guests pick an open time.
Read moreRecurring Events
A weekly rehearsal as one event, with the weeks off skipped.
Read moreTicketing
Sell tickets with QR check-in and zero platform fees.
Read moreIntegrations
Google Calendar, Outlook, CalDAV, Stripe, webhooks and the REST API.
Read moreThe dates in one place, the parts learned at home
Put the lessons, rehearsals and concerts on one schedule, free to start.
No credit card required. Already listed somewhere? Bring your events in from Google Calendar, a link or a poster, free.