Fugue Machine : MIDI Sequencer 4+

Multi-playhead MIDI sequencer


    • 4.9 • 190 Ratings
    • £19.99



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. Thanks to the AUv3 standard, you can run multiple instances of Fugue Machine on the same device when hosted in an AUv3 MIDI host app — like Logic Pro, AUM, and Audiobus.

What’s New

Version 1.5.19

- Updated network permissions, resolving an Ableton Link connection issue introduced in 1.5.17
- Updated About page

Ratings and Reviews

4.9 out of 5
190 Ratings

190 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!

Man with migraine ,

Simply amazing

Just updating my review as I’m still using this app many years after purchase. So unique, very inspiring and a central part of my iOS music making process. Delighted to see it still gets maintenance updates by the Dev. Very very good. Highly recommended.

So good. Really great idea. The ultimate idea generator. An essential part of my iOS music workflow. Thank you for making this brilliant app.

Spookyzootoo ,

Superb App.

One of those app where you can get lost in the music for hours.

Super easy to get great sounding results. Enter a few notes into the piano roll and then tweak the settings of the 4 different play heads so that they play at differing tempos, pitches and direction.

Soon you’ll be sitting up proud like a modern day Bach with a brand new composition.

Its a very cool app. I like to add in notes of a song I have already written and then hear how the app can spin a different outlook on that melody or riff which can then be useful to use elsewhere in the track.

All 4 play heads can be assigned to separate midi channels so you can play other iOS Synths with the app.

You’ll love it!

App Privacy

The developer, Alexandernaut, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary based on, for example, the features you use or your age. Learn More


  • Family Sharing

    Up to six family members can use this app with Family Sharing enabled.

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