Generative Music System

Wotja V19 has now GONE. Don't fret! In WOTJA V20 it's even more powerful   »  See What's New

Wotja ( "wot-jah") is a unique & powerful generative music creator, lab and player system.

It creates live generative music, MIDI, melodies, cut-up text and beautiful ambient soundscapes.

With it you can find ideas & inspiration, have fun experimenting or even just relax!

Users say: "Great app, complex, deep and unique", "Simply the best", "Masterpiece"

What you can do with Wotja

Wotja Platforms, Devices & Languages

Platforms: iOS, tvOS, macOS, Windows, Android | Apple TV, Fire TV

Devices: iPhone, iPad, iPod touch, Mac, PC, Laptop, Tablet, Mobile | Apple TV, Fire TV, Android TV

Languages: English, Chinese, Japanese

Wotja History

From a double BAFTA award-winning development team, Wotja V19 is the continued evolution of the legendary 'SSEYO Koan Generative Music System', Noatikl, Mixtikl, Liptikl & Tiklbox. It uses a combination of AI Techniques & heuristics we’ve been crafting for nearly 30 years and is going from strength to strength.

Background: Generative Music is a term coined in 1995 by Brian Eno whilst working with SSEYO Koan Pro.


What's New in V19

App Range for 2019

Wotja V19 is our app for 2019: There are 4 different versions available:

  • Wotja: Generative Music Creator, Lab & Player (Free / Free + Subscription App)
  • Wotja Pro 19: Generative Music Creator, Lab & Player (Paid-for App)
  • Wotja Box 19: Generative Music Maker (Paid-for App)
  • Wotja Go 19: Generative Music Player (Paid-for App)

Wotja V19 System Highlights

  • New apps & Feature Sets/tiers
  • 'Flow Player' mode for a succession of freshly generated mixes
  • Powerful 'Randomization Schemes' to make it quick & easy to change the feel of automatic mixes (Flow, Boxes etc.)
  • Macro Oscillator 1 Tone Generator in the ISE 19 sound engine
  • Intermorphic Wotja Script
  • Improved harmonisation in the IME 19 music engine
  • 2 octave Rules (Scale, Harmony & Next Note) for greater creative freedom & experimentation
  • BP4 Backings pak and 'TTM1 Players 2'; reworked 'TTM1 Players'
  • Many new Sound and FX Presets
  • 10 minute music play time in 'Free Mode' for Mix Editing, Flow mode, User 'Box' albums and then Built-In Albums 'Calm' & 'Relax'
  • 'Flow Segment' in Documents screen to make it easy to select a Flow 'Randomization Scheme'
  • "Wotja Go" player apps for Apple TV and Fire TV/Android TV
  • File sorting options for the User segment of the Documents screen
  • Multitasking support (Split View / Slide Over) in all Wotja apps on iPad
  • Music Play Time Timeout (auto-stop) for the Wotja Go 19 generative music player app (all versions) increased from 1 hour to 8 hours
  • Chinese and Japanese localizations (except in Mix Editing Mode)
  • Many UI & usability improvements

Wotja System - Key Features (App/Tier Dependent)

  • Easily generate beautiful live ambient music, MIDI & melodies
  • 100s of gorgeous generative music templates for mixing & editing are included
  • 130+ real-time changeable generative (MIDI) music parameters
  • Multi-channel MIDI Out/In - see requirements
  • 'Text-to-Music' function to quickly generate reflective music & melodies using text in ANY language
  • Mix randomization options for fast creation of ideas, mixes & automatic 'Box' albums of mixes
  • 48 independent content cells in 12 tracks for live mixing/generative cell sequencing
  • Editors to let you experiment with sound design & create modular synth/FX networks
  • SF2 wavetable & WAV/Ogg loop support for custom sounds
  • Cut-up editor for word locking, syllable rules, word alternatives, 5 source fields & more
  • Mixdown recording to VIDEO [iOS/macOS only], WAV, MIDI so you can easily use/share your creations
  • Up to 8 hours* continuous live music generation (Music Play Time Timeout [MPTT]); press play to restart (*optional LP subscription to disable the MPTT)
  • Inter-App Audio & Audiobus 2/3 support [iOS]
  • iCloud & iCloud Drive support [iOS/macOS]
  • Includes the Wotja Go 19 'Flow' player app interface (as relevant) for Apple TV/Fire TV/Android TV
  • Light & dark UI modes
  • Opens Noatikl, Mixtikl & Liptikl files
  • Lots more… (see also this FAQ)


Wotja Magazine Reviews


"Wotja is really one of a kind in the generative music space, there’s nothing like it at all. It’s really a seriously big bundle of tools, but all in one app, and all with the same purpose. Intermorphic has some serious credentials in this area, having been in the world of generative music for well over a decade now."

Wotja User Reviews


"As an accomplished musician in my own right, investigating alternative means of generating sound is a longstanding interest of mine. Even after a thirty year career in the arts, this app has completely changed my perception of the concept of music itself! I implore all students of music to explore this software in its entirety- this past week has had me rediscover my love for creation."

"The Most Advanced Generative Music and Sequencing Solution, Period"

"When I was a young lad long ago, I downloaded a free demo of Sseyo’s Koan, the long-lost ancestor to Wotja. I was quickly entranced by the idea of generative music but as a young man I was unable to afford Koan’s price tag. Fast forward to 2k19 and Wotja takes many of the original Koan ideas and expands them. In fact, Wotja benefits from the long pedigree of related generative music apps, as it comes bundled with plenty of their content. There are lots of little apps that will bring some measure of generative/aleatoric aspects to your music, but none can offer the depth that Wotja delivers. I’ve used it to sequence hardware and iOS synths without issue."

"Great app, complex, deep and unique"

"I'm an engineer, I like tinkering, I like creating stuff, I like music sound and synthesis, I like puzzles ... I love Wotja. Such a cool app, very flexible and deep. It really can be quite addictive, challenging, complex and fun. Ticks all the above."

"Simply the best"

"Probably the best generative music app on iOS. I’d wholeheartedly recommend this to anyone with an interest in music making."

"Superb package for ambient music creation"

"Wotja a complete package for the creation of ambient, generative music. Offering complete and comprehensive control of all parameters, it makes possible gorgeous, ambient music. As someone who has been creating this kind of music for a while, Wotja enables me to achieve my vision in ways no other software can. The monthly subscription model is a total steal; if you need support, it’s fast, technically sophisticated, and patient. The latter is important as I think I have asked every dumb question I can about the software. The support people are unfailingly friendly and very helpful. If you have the ambient gene, this package is for you."

"Exceptional Dimensionality"

"I have been in love with Intermorphic products since the days of KOAN Pro. Wotja 19 adds a whole new dimension to creativity and playback for professional musicians and rank amateurs like myself. This program is awesome!"

"An excellent app!"

"I've used Intermorphics products since Liptikl and Noatikl 2. They've been an indespesible part of my creative flow for a long time. I held off from switching from my trusted Noatikl 3 app for a while, but finally made the switch to Wotja Pro 19 and I couldn't be happier! I've been moving all my old Noatikl files over and am re-programming my scripts for Lua to Javascript. I'm really happy with the improvements since Noatikl!"

"perfect for what it aims for!"

"... this is a dream. I am freaking out at how scary or lovely you can get."

"Amazingly powerful!"

"Sounds great on its own. MIDI & audio export. Top notch support by developers. Hours / days / years of fun!"

"Worth spending the time learning it"

"It’s deep... takes some real effort to go deep, but then you realize the real power of it, from patterns, scripts and all... you can produce some happening stuff with it :-)"

"Love this app!"

"I have been a Wotja user for several years and it’s always a pleasure to to re-purchase whenever they create a major upgrade. There’s SO much in this app. You can really geek out on the smallest of setting and yet it’s also pretty easy for new and not-so-musically-skilled person to get going with."

"The Best"

"I'm really fond of this app. I use it in both simple and advanced ways. The sound quality is excellent. The sounds have a beautiful crystalline, digital quality that is clean, refined, and unique, better what most music apps can do. The obvious strength is endless ambient listening, but there are deep parameters and with a touch of creativity and inspiration one can use the platform as a jumping-off point for fascinating generative composition, especially if you have a mind to export midi into DAW projects. Thanks very much to the developers. A magical app! I hope they keep refining and updating it as they have now for such a long time. Unfortunately this app is one of a kind, and I say unfortunately because when it comes to generative platforms it's one - and probably the best - of only a few options that I’m aware of. "

"Wotja think of it now?"

"AirPods and Wotja Flow. Heaven."

"Amazing Stuff!"

"I love the textures I’m getting already. If you’re thinking of purchasing, it’s well worth the price!"

"Fantastic support"

"Wotja is a fantastic generative sound canvas that you can control - or just listen to. It can be as easy as loading one of many included mix albums, to the generation of random mixes, to manual mix editing to actually getting dirty under the hood with the voice editing and the instrument design. It goes pretty deep!"

"Works well"

"This company is fantastic at what it does."

"A vehicle, a journey, a playground"

"All the toys, and far more than the sum of its parts. (Autocorrect had it as "more than the sum of its arts", which is actually more accurate)"

"Generative Music Masterpiece"

"These guys are Ambient legends and now we can all work with their tools. Create your own ambient tracks or use Wotja to create some initial ideas to build upon. I use this to quickly bang out some background music, but mostly it is the starting point for composing. I find having Wotja build a nice little background bed I can compose over; my tracks go places they never used to (in a good way). Wotja can be used as a stand-alone app or as just one element in your songwriting toolkit. I really love Wotja. A lot!! ... When you think of the fact that these guys helped develop ambient music generative technology from its infancy, then supporting them by buying the app only makes sense."

"Fantastic App!!!"

"Get the free version, try out everything for 3 days or just buy the current yearly version. You will not regret it!"

"great compositional tool"

"an indispensable instrument for widening your scope, when it comes to composition. Thank you for your work!"

"Surprisingly good results"

"This app is so much fun and the results are often beautiful and interesting. The cut-up technique lyric generator is worth the price. It's flexible enough so that you can steer the direction of the outcomes and continue to refine until you find something you like. I don't think there's another program like this."


"Loving this application! A great way to explore some amazing sounds and create new music. For all of it’s depth it’s incredibly easy to get started. Tech support is phenomenal. These guys really care about what they build! Highly recommended!"


"... a specialist app for making generative music ... the developer goes to great length to make it as accessible as possible to all (without losing the appeal for more experienced users). I really like it ... Recommended."

"Deep and professional app"

"If you loved Noatikl and Mixtikl then checking out Wotja is almost required. The guys at Intermorphic Ltd have wrapped up all the great stuff from the earlier apps and delivered them here in a beautiful package. I consider it my number one composing tool when I'm working in the Ambient genre."


"Intermorphic continues to produce brilliant apps. The possibilities of Wotja are vast and deep."

"Unique App"

"A unique app, which is getting lots of updates. Very deep, it requires considerable time to delve into it's complexities. It's well worth it though, in my view."

"Best generative music app"

"There is so many possibilities on this app. The creators are super nice people, theres only 2 of them but they do answer very quickly and are not greedy... It really scares me to think that the developers would stop supporting and growing such amazing tools, please don't! Much love"

"Completely changed my mind"

"I recently purchased the "pro" (non-subscription based) version of this. Like any musical instrument, it rewards more practice and play. And the fact that there are so many parameters to tweak, change (or not - you can use templates and leave them alone, but where's the fun in that?), modify, etc, only makes for more surprises and creative experimenting. You can just experiment, as with modular, old-school analog hardware, and see what happens. And quite often, there are very satisfying results. This is very powerful software. These guys are ***THE*** pioneers along with Eno in generative music. They clearly love it and deserve to make a decent living and be supported for their long-term and continuing work. Highly recommended."

"The perfect sleep machine."

"Intermorphic is awesome!! I was a little hesitant to purchase another subscription service, but it all really factors out to only about a dollar per month. Wotja is hands down the best generative software that I have ever used. Extremely musical. Keep up the good work."

"Still the best MIDI composition tool in my toolkit"

"Keep in mind that even though the app is associated with "generative music" and ambient sounds, it is possible to create music in any genre with this - its possible to direct every voice to play note by note OR just tell a voice to improvise OR tell a voice to follow and/or harmonize with other voices. ... nothing gives this much control to a composer on iOS and I've tried almost every sequencer, generator, MIDI tool available. It's very much worth learning, the developers are responsive and there is a great website for support."

"Light years ahead!"

"by far the most sophisticated and powerful generative music application available."

"Every kind of amazing"

"Intermorphic's apps have always been strong on interoperability, but here they've managed to combine what is effectively Noatikl 4, Mixtikl 8, and Tiklbox 2 into a single beautifully-designed all-in-one generative mega-app – putting an end to all the copy-and-paste faffing that used to be involved if you wanted (e.g.) to use Noatikl content in Wotja. ... this is the culmination of everything Intermorphic have done, and an all-in-one machine for the creation of wonders."

"having the time of my life"

"It was amazingly easy to connect to my PC DAW with rtpMIDI so I can use my own sounds but it's hardly necessary, the latest Sound Engine is excellent. I thought I'd just say...excellent job. Thanks."

"Professional grade!"

"Wotja ... is the most powerful and feature rich application for generative music creation."

'Free Mode'

All our free Wotja apps are full-save apps which operate by default with a 'Free Mode' Feature Set. These apps are are all AD-FREE, too.

Use in 'Free Mode' does NOT require a Subscription or payment of any kind and it really does let you use a full-save Wotja for free, albeit with some limitations.

The main limitations in the 'Free Mode' Feature Set are as follows: mix editing in track 1 only, MIDI Out/In on channel 1 only, an auto-timeout of 10 minutes and use of any recordings you make for personal non-commercial use only.

See Feature Sets below for all limitations.

Wotja is a DEEP app and Free Mode really is POWERFUL.

In Free Mode you can create/edit/save/export mixes and you might well have a 'euraka' moment when you realise that entire pieces of complex, rich generative music can be created in just one cell (examples of such mixes are in the Built-in 'Calm' and 'Relax' Albums).

10 minutes is plenty of time to create/play/experiment with mix files and to enjoy Flow mode, Boxes and Albums for free. If you want to restart then simply tap the play button for another 10 minutes - it is as easy as that!

P.S. Did you know you can also use cut-up text techniques in Wotja to create ideas for lyrics, creating writing etc.?

Are we crazy in allowing so much for free?

Our 2 main goals for Wotja are for it to be widely used as a creativity tool/relaxation aid and for it to have an active community of users.

To use it you just need it installed on a suitable mobile device, tablet, computer/laptop or TV. You can then generate live music with it on that device - no streaming is needed.

We fully understand that there are users that either cannot afford to pay for apps, won't pay to use apps or simply just wish to try apps out for free. We have created Free Mode for them.

Free Mode has now evolved to be so powerful that, if you choose to, you can realistically use Wotja for free (especially important for our Google Play version), be that as a creativity tool or as a relaxation aid. You can even share the mixes you make for others to play for free in Wotja (in Free Mode!).

Wotja continues to go from strength to strength. If you are interested in creating or listening to generative music then because of the power of 'Free Mode' the decision to get Wotja should end up being one of the easiest you will ever make :).

So, it may well be that we are crazy, but our hope is that enough users (creators or listeners) may decide at some point in their use of Wotja that they would like to use it without the 'Free Mode' limitations. At that time they can then get an easy-to-cancel In-App Subscription (where available) or a Paid-for version (see our download page for links).

What can I do in 'Free Mode'?

  • Create/save automatic mixes or manual mixes.
  • Play mixes for up to 10 minutes (tap play to restart).
  • Edit all Cells in Track 1 of a mix and save/export mixes.
  • Generate and export cut-up text
  • Play Flow mode for up to 10 minutes where mix durations are governed by the Settings > Albums/Flow > Mix Durations parameter.
  • Play any .wotjabox 'Box' album for up to 10 minutes.
  • Create/save automatic 'Box' albums of generative music mixes (each mix is of 30 second duration; editing/saving of Boxes is not supported).
  • Use MIDI Out/In on Channel 1
  • Make audio mixdown recordings of up to 30 seconds or record the output of Wotja (on iOS using Inter-App Audio or Audiobus and a suitable audio/MIDI recording app or on other devices using any app that can record system audio/MIDI) noting that any such recordings may be used for Personal / Non-Commercial Use only
  • Explore generative music composition and sound design:
    • Use the Intemorphic Music Engine (IME) editors to try out all sorts of generative techniques and end up with something totally custom; start with the generative settings in the available templates if you want.
    • Use the Intermorphic Sound Engine (ISE) editors to create totally custom modular synth/fx sound networks, including using your own SoundFonts; start with the sounds in the available templates if you want.

The benefits of 'Free Mode' for Creators

  • For free, use what you create, save & record for Personal / Non-Commercial Use only (please do respect the terms in our EULA and Terms of Service)
  • If you have an interest in Generative Music and you are someone who chooses only to use Freeware and/or if you are an Educator or in Education, then Wotja 'Free Mode' means you can explore and work with such things for free. As Wotja is a system that is undergoing continuous development, including being ported to other OS, it should be an app you might well wish to consider using!
  • When you find you want to do more than you can in Free Mode, then there are low cost Subscription options and/or Paid-for versions you can purchase.

Feature Sets

Tip for app link: Tap relevant icon in table below.

The various features and capabilities of your Wotja V19 app are referred to as its 'Feature Set'.

There are 2 kinds of Wotja apps with a 'Free Mode' Feature Set:
  • iOS / macOS: Free apps that operate with a default 'Free Mode' Feature Set unless there is an 'Pro' tier (AKA 'Unlocked') Feature Set Subscription.
  • Windows / Android: Free apps that are permanently locked in the 'Free Mode' Feature Set.
Wotja Feature Sets and Limitations (V19.10.1)
Wotja Go Feature Set: Player only; refer to its User Guide.
Feature Set / Tier 'Free' 'Box' 'Pro'
Free or Paid-for version Free* Paid-for Paid-for
iOS (Subs option*)
macOS (Subs option*)
Music Generation
Music Play Time Timeout [MPTT] 10 mins 2 hours 8 hours
Built-in Albums: Relax/Calm Yes Yes Yes
Flow Mode Yes Yes Yes
Edit Randomization Presets All Many All
Save Randomization Presets No Yes Yes
MIDI Out/In Channel 1 only No Multi-Channel
Audiobus/Inter-App Audio (iOS) Yes No Yes
Mixdown Recording ('A'udio, 'V'ideo [iOS/macOS], 'MIDI') 30s A/V No A/V/MIDI (max 1000 bars / 3600 secs)
Use of Recordings of output Personal Personal Commercial
Openable Files Type (i.e. .wotja, .wotjabox, .wotjalist) All .wotjabox only All
Openable Files Number (Documents screen) First 5 listed All All
Export Flow Mix No As a Box album As a Mix or Box album
Add to/Edit/Save/Export Playlist of mixes No No Yes
Boxes (Automatic albums)
Max Mix Durations 30 secs 2 hours 4 hours
Export mix No Yes Yes
Change mix position No Yes Yes
Change Item Override Settings No Yes Yes
Delete mix No Yes Yes
Save/export a Box No Yes Yes
Add saved mix or mix template No Yes Yes
Mix Editing Mode
Track Editing Track 1 only N/A All tracks
Music Play Time Timeout [MPTT] 10 mins N/A 8 hours
Export or Merge Templates No N/A Yes
In-Mix Randomization (Cell, ISE) No N/A Yes
Mixdown Recording Capability (see above) Yes N/A Yes
Access to Mix Editors (IME/ISE; Cut-up; Display) Yes No Yes
Mix & Cut-Up Save/Export Yes No Yes
Optional Subscription tiers
Long Play [LP] (AKA Live Use [LU]): License for Live Use; Disables the MPTT iOS / macOS Subscription versions only

Wotja Videos

See also the Intermorphic YouTube channel for our tutorials and other videos.

30s App Previews (V19)

Wotja 19: 30s App Preview (English)

Wotja 19: 30s App Preview (Chinese)

Wotja 19: 30s App Preview (Japanese)

Wotja Go 19 on tvOS (English): Generative Music Player (30s)

Wotja Go 19 on tvOS (Chinese): Generative Music Player (30s)

Wotja Go 19 on tvOS (Japanese): Generative Music Player (30s)

Tutorials (V19)

Wotja 19: Tutorial (18m) - Quick Start: Generative Music System

Wotja 19: Tutorial (17m) - Templates, Voice Types, In-Mix Randomization

Useful Earlier Tutorials (V4/5, but still useful for V19)

Wotja V5: MIDI Out Pt1 - Using Generative Drum Templates to Play Beatmaker; mix in AUM

Wotja V5: MIDI Out Pt 2 - Using Generative Music Templates to Play Thumbjam/Beatmaker 3; mix in AUM

Wotja V5: Using MIDI Out to Play 3rd MIDI Synths (Analog Synth X / Thumbjam)

Wotja V5: How to Make & Tweet a Wotja Mix Video Recording

Wotja V4: Creating a Drone Mix (10m)

Wotja V4: Mix Randomization Settings (12m)

Audio Examples

Audio Recordings

The mix recording below was created from this 2 part video tutorial (download the wotja file).

Listen to some other recordings (medium quality MP3).

Included IM Pak Content Mix Recordings
Ambiences 12 gen 'parts'
Arps 16 gen 'parts'
BellsGlasses 15 gen 'parts'
Drones 18 gen 'parts'
MelodicPads 15 gen 'parts'
Melodics 18 gen 'parts'
Strings 8 gen 'parts'
Weirdness 7 gen 'parts'
Windharp 7 gen 'parts'
Single Cell Demo Pieces Content Piece Recordings
Arp love Merged templates
Bells and pulse Merged templates
Calm trails Merged templates
Cosmic Merged templates
Ebb and flow Merged templates
Piano and glass Merged templates
Tiklbox Calm 5 Custom piece
Tiklbox 6 Custom piece
Included IM Pak Content Mix Recordings
GenMix1 29 gen 'parts'
GenMix4 23 gen 'parts'
GenMix5 12 gen 'parts'
GenMix6 25 gen 'parts'
GenMix7 25 gen 'parts'
DroneMaker 1 32 gen 'parts'
Generative Drums 1 (MIDI) 25 gen 'parts'
Generative Drums 2 (MIDI) 25 gen 'parts'
Generative Elements 1 (MIDI) 25 gen 'parts'

Shared Wotja Videos - Example