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Twelve Tone

Twelve Tone

Composition and Analysis Tool

16 ratings
8 reviews
📚 Education
🎵 Music
$4.99

Details

  • Released
  • Updated
  • January 5, 2011
  • June 22, 2026

Developer

Patrick Q. Kelly
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About

This app helps musicians and teachers compose and analyze music using dodecaphonic and set theory. It allows users to enter tone rows, automatically generates musical matrices, and provides playback and sharing options for compositions.

✓Enter tone rows via staff or piano keyboard
✓Automatic generation of Prime, Inversion, Retrograde, RI matrices
✓Real-time Interval Vectors and Circular Analysis updates
✓Save and manage tone rows with names and markings
✓Share PDF of notation, keyboard, and analysis
✓Listen to row playback with selected rhythm patterns
✓Matrix audio playback for pitch identification
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What's New in Twelve Tone

6.0

June 22, 2026

Added Piano to iPhone. Updated User Interface. Minor updates and stability improvements.

User reviews

Most RecentHighest RatedLowest Rated

Difficult to use

Maybe I’m not looking at the right part but it’s very hard to do anything
wdcovillewdcoville

Somewhat Limited

A reasonable app’ but somewhat limited and, though reasonable, is not entirely intuitive .
giles berliozgiles berlioz

Super Update

Danke für das Update. Jetzt kann man einigen Nutzen aus der Verwendung der App ziehen.
Einige Wünsche bleiben offen:
- Bedienungserklärung/Hilfe in der App
- Export nach MIDI
- Grafischer Notenexport auch mit den Varianten der Reihe (Krebs, Umkehrung etc).
Aber es wird immer besser. ;)
CompagELCompagEL

Manual

Hi Patrick. Can you put together a manual for the Twelve Tone app? It's a cool looking app, but I need help with the interface. Do you have a website or a walk through tutorial? Thanks!
HaHaWorldHaHaWorld

Fantastic!!!

What a bold and beautiful app for the musically daring. I can put my scales and melodic pattern books away now.
Please add a loop function and the ability to play the full range of the piano or tone row.
Very Cool.......Thanks!
Ed.
The update made a great app even better! I'm a composer this app is not for amateurs but for musicians and composers looking to unlock ideas beyond traditional scales and chords. This is by far the best app on this subject on the app store. Another Cool update......Great!!
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turbogtrturbogtr
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FAQ

What is Twelve Tone used for?

Twelve Tone is an extensive music composition and analysis tool. It is designed for musicians and music teachers interested in dodecaphonic and set theory analysis, allowing for the creation and manipulation of tone rows.

How do I enter a tone row in Twelve Tone?

You can enter a tone row by touching the staff directly on your device. On iPad, you also have the option to play the piano keyboard to input notes.

Does Twelve Tone check for repeated notes?

Yes, Twelve Tone alerts you to any repeated notes by highlighting them. It also checks enharmonic values, disregarding octave and accidentals to ensure accurate analysis.

Can I save my compositions in Twelve Tone?

Yes, you can save your tone rows, which can contain between 1 and 12 notes. Saved rows are stored with their name and current matrix markings, appearing in a list with MIDI numbers for easy identification.

What sharing options are available in Twelve Tone?

Twelve Tone allows you to share a PDF of your composition's notation, the piano keyboard (on iPad), and the circular analysis. This makes it easy to distribute your work or analysis.

How does Twelve Tone handle playback?

Twelve Tone offers comprehensive playback options for your tone rows, including Prime, Inversion, Retrograde, and Retrograde Inversion. Each can be repeated and transposed, with the root kept within an octave of the original pitch.

What is the price of Twelve Tone?

Twelve Tone is available for a one-time purchase of $4.99. This grants you full access to all its composition and analysis features.

What devices is Twelve Tone compatible with?

Twelve Tone is compatible with iPhone, iPad, and iPod touch devices. It requires iOS 4.0 or later.