A music sequencer reimagined with multiple playheads.

"How Bach would have made a sequencer." (Create Digital Music)
"A musical feat." (Creator's Project)
"A new approach to sequencing." (XLR8R)
"A next generation music sequencer." (Ask Audio)

FUGUE MACHINE is a tool inspired by composition techniques used in Baroque music and Serialism — e.g. Bach’s canons and fugues, and Schoenberg’s twelve-tone technique. The idea was to design a tool to manipulate a melody’s speed, direction, and pitch, as well as play multiple variations of the melody simultaneously.

As it turned out, the best implementation for this was to reimagine one of the most fundamental building blocks of all music sequencers: the piano roll.

FUGUE MACHINE is the world’s first multi-playhead piano roll. Create a music sequence and play it back with up to four playheads at once — each at various speeds, directions, pitches, and more. Watch the playheads dance, and hear the complex patterns that emerge.

It’s mesmerizing.

Fugue Machine supports iPhone, iPad, MIDI, AUv3 MIDI, Ableton Link, Audiobus, Audiobus 3 MIDI, and Inter-App Audio.

What’s New

Version 1.5.16

Fugue Machine 1.5 — iPhone support, AUv3 support, more scales, piano roll gesture improvements, and more. See 1.5.0 Version History for more info.

iOS 13 caused a few UI issues in the More Menu. All fixed now.

The new position no longer blocks the bottom toolbar buttons or the transpose control, making Fugue Machine more playable when the menu is open.

Ratings and Reviews

4.9 out of 5
133 Ratings

133 Ratings

Cotswold Boy ,

Dream machine

Oh boy! So much to admire here. This is a beautifully designed music generator, made with love, and designed to help you create amazing, contrapuntal, mixed-up melodic harmonies that fly in spirals around your mind. It's that good!

Dive straight in with the pre-loaded songs to see how things work, then let your creativity flow through the simple, intuitive interface. This app has clearly been made by someone who loves the sheer possibility of combinatorial sounds and has delivered to us the ability to create new soundscapes - the focus here is on ambient and rhythmic exploration, and it is a wonderful thing to behold.

The latest update, which allows you to map MIDI out to any compatible app, and brings in Audio Unit functionality, is almost making me go into a frenzy of joy, such are the profound delights that it opens up.

Buy this app. You won't regret it!

dannyboat ,


So simple yet so satisfying. Plus plays wonderfully with my hardware modular synths via midi. I have only had my iPad 3 days and finding this app was the moment when I stopped being frustrated by os midi and instead got lost for hours in music making. Also enjoying Alexander’s other apps. I hope he keeps coding! Thank you.

Aardvarkguy ,

Now That’s A Whole Lot Better!

I’ve had this app for about a year now and after a bit of initial investigation I decided that Inter App Audio is not for me and so the app got consigned to my “great idea, pity about the execution” file.
NOW however with the addition of AUV3 Fugue Machine is exactly what I wanted in the first place. Thank you Mr Developer! As a point of interest, is there any chance you could do something with Arpeggiator Pro - another potentially brilliant app which desperately needs a rework? Thanks again.

App Privacy

The developer, Alexandernaut, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


Alexander Randon
10.1 MB

Requires iOS 11.0 or later. Compatible with iPhone, iPad and iPod touch.



Age Rating


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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