For soloists, singers and orchestra players
Rehearse your concerto with the orchestra
Play your part while the orchestra plays the rest. Slow it down, loop a passage, mute any instrument.
Windows and Mac · Pay once per work, no subscription
Ready today: Bach, Beethoven and Handel for violin, keyboard and flute. See the works Hear it
No orchestra on a Tuesday evening
The lesson is on Thursday. The pianist is booked and the practice rooms are full.
So you practise your part alone, count the rests, and guess where the orchestra comes in.
From download to playing
- Download the free app for Windows or Mac.
- Open your work and play the opening free, with the orchestra.
- Buy the work on synchestra.ai with a free account.
- In the app, click Buy Work (it doesn't charge you again). Enter your synchestra.ai email and password in the box that appears and click Unlock Work. The work's page also opens in your web browser. You don't need it, so you can close it.
Slow it down, loop it, then play it with the orchestra
Your tempo
Take the hard passage at 70% and build it back up. The orchestra keeps its pitch.
Your part
Mute the solo and play it yourself. Or take Violin II, or the viola.
The whole score
The conductor score scrolls with you, so you see who answers your phrase and when the tutti returns.
Hear the orchestra without you
Beethoven's Romance in G, played by the app from the score, with the solo violin switched off. The violin is you.
Ready to play today
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Bach, Concerto for 2 Violins, BWV 1043
For: Violin
Price: €29.90 or by movement from €9.90
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Bach, Brandenburg Concerto No. 5, BWV 1050
For: Flute, violin, harpsichord
Price: €39.90 or by movement from €6.90
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Bach, Concerto for 4 Harpsichords, BWV 1065
For: Harpsichord
Price: €24.90 or by movement from €7.90
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Handel, Organ Concerto Op. 4 No. 6
For: Organ
Price: €14.90 or by movement from €5.90
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Beethoven, Romance in F, Op. 50
For: Violin
Price: €11.90
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Beethoven, Romance in G, Op. 40
For: Violin
Price: €7.90
Each of these works comes with every part and the conductor score.
Free to try: Ravel's Boléro and Handel's "Lascia ch'io pianga".
Coming next
We are building more works.
Some you can pre-order now at a thank-you price.
Looking for another work? Tell us which one, and we'll write when it's ready.
Built part by part, from the score
Each work starts from a scholarly edition of the score. Our editors set every part, and orchestrators build the orchestra one instrument at a time.
That is why you can mute any instrument and the rest plays on as before.
Robrecht H. Paternoster started Synchestra. In 2004 he performed Saint-Saëns' Organ Symphony in Brussels Cathedral with a digital orchestra he had built himself. Read the story
Preparing an audition or a concert?
Rehearse with the orchestra every evening in the weeks before, at the tempo you need that day.
Teachers can play the orchestra in a lesson and try any work in the app before recommending it.
Tell us which works your students playWhat is Synchestra?
Synchestra is a free app for Windows and Mac that plays the orchestra while you play your part. You set the tempo and mute any instrument. You buy each work once.
Is it a subscription?
No. The app is free, and you pay once for each work you buy.
What do I get when I buy a work?
The complete work, or the movement you chose, with every part and the conductor score.
How do I start playing a work I bought?
Open the work in the app and click Buy Work, which doesn't charge you again. Enter your synchestra.ai email and password in the box that appears and click Unlock Work. The work's page also opens in your web browser. You don't need it, so you can close it.
Can I hear a work before I buy it?
Yes. Every work that is ready plays its opening free in the app. Boléro and "Lascia ch'io pianga" are free to try.
Can the orchestra follow me as I play?
Tempo following is in development. Today you set the tempo yourself, for the whole work or section by section.
Which computers does it run on?
Windows and Mac today. An iPad app is on the way. On your phone now? We'll email you the download link.
Is it like a backing track?
Yes, an orchestral backing track you control: set the tempo, loop a passage and mute any part.
Hear your concerto with the orchestra tonight
Email me the download linkWindows and Mac · Boléro and a Handel aria free to try
