# 43 Electro Swing: Jazz Band — Chaos-driven Song Generator

> AI-powered electro swing song generator with a virtual jazz band. (iPhone/iPad app by Soft Brew Mobile.)

- Source: https://appshunter.io/ios/app/43-electro-swing-jazz-band/id6812345283 (this page in markdown: same URL + `.md`)
- Developer: [Soft Brew Mobile](https://appshunter.io/developer/561703410)
- Category: Music, Utilities
- Price: Free with in-app purchases
- Rating: 5.00/5 from 1 App Store ratings
- Age rating: 4+
- Requires: iOS 15.0 · 40 MB
- Released: 2026-09-21
- Data updated: 2026-10-24
- Monetization: free

## What is 43 Electro Swing?

43 Electro Swing writes complete electro swing songs and plays them with a band.
Press write and you get a whole record: old verses heard through a gramophone,
builds that open the sound up, and club drops with a four-on-the-floor kick under
the band and the whole band pumping around it — then a solo, a break or a big-band
shout, and an ending: a turntable brake, a big-band button, or the record fading
back to 1937.

The band is two gypsy-jazz rhythm guitars playing la pompe, a lead on clarinet,
trumpet, muted trumpet, alto sax or guitar, a three-piece horn section, upright
and sub bass, keys, a swing kit and a producer's house beat. The guitar and the
kit are real recordings; the horns, clarinet and bass come from an FM engine that
blows and scoops and slurs like players do. All of it ships inside the app, so it
works with no network at all.

The songs come from chaos maths. A Lorenz attractor draws the melody and a
logistic map shades the drummer and the comping, so no two bars need be alike.
Chaos on its own is noise, so a small model filters it: it is rewarded for
swinging intervals and learns as it writes. The CHAOS / TASTE slider decides how
much say each one gets.

Eleven styles, and each one is a whole band: its changes, its drummer, its tempo
range and how hard it swings. Electro Swing, Hot Club House, Big Band Boogie, Jump
Blues, Noir Swing, Swing Hop, Balkan Beats, Charleston, Cabaret Lounge, Electro
Dixie and Swing Step. Tick STYLE LOADS RIG and each style brings its own sound.

The sound is half the record. Four channels — bass, rhythm guitar, horns and lead
guitar — each with a voicing, a tone stack and a resonator: a gypsy-jazz guitar body,
a speaker, a gramophone horn or a straight ribbon microphone. Seven one-click
rigs, from Hot Club to Warehouse. Effects for the record and the club: sidechain
pump, vinyl crackle, gramophone, tape wow, chorus, tremolo and spring reverb.

Every song is built from its seed. Write the seed down and you can have that
exact song again, note for note. A seed from the browser version rebuilds the
same song here.

You can play over it, too. The pads are the notes of the song's key rather than
a piano keyboard, so nothing you touch is wrong, and the sixteen-step lane swings
with the song and follows your host. Both play any of ten instruments through
its own channel and out on its MIDI channel.

Turn on RADIO and it keeps playing, picking a new style, key, scale and tempo for
every song.

You also get:

• 11 styles, 14 scales, 12 keys, tempo and density
• 15 voicings, 6 resonators, 7 rigs and 7 effects
• 8 keyboard voices, from upright piano and vibraphone to accordion and bandoneon
• Sampled or synthesised drum kit, switchable; brushes always synthesised
• Seven-part mixer with a meter on every part
• MIDI in, so your keyboard plays whichever instrument you have selected
• Export a MIDI file, a WAV mix, or stems — one WAV per part (in the app; in a
  host you record the audio there)
• A note and a MIDI channel for every drum and every house-beat hit
• UI scale, so the panel is not tiny on a big iPad
• Live spectrum and waveform, and the chaos engine drawn as it runs

Two Audio Units, an instrument and a MIDI processor. Each part sends on its own
MIDI channel and every drum has a note and a channel of its own, so one instance
can drive a rack of them. The MIDI version passes your keyboard through. Both
follow your host's tempo and transport, and one install registers both.

The app is free and nothing in it is held back. Using the Audio Units inside
other apps is a one-time purchase, and each AUv3 session plays for two minutes
first so you can try them properly.

No account, no ads, no subscription. Works offline.

Samples: 
Karoryfer Emilyguitar and Big Rusty Drums, and two voices from the
Versilian Community Sample Library, all CC0.

## Key features

- AI song generation
- Virtual jazz band ensemble
- Multiple electro swing styles
- Chaos mathematics for unique melodies
- Offline functionality
- MIDI export
- Interactive playing pads

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| AUv3 Unlock | $2.99 | one-time |


## Is 43 Electro Swing safe?

Not enough ratings yet to assess 43 Electro Swing.

## Is 43 Electro Swing legit?

43 Electro Swing: Jazz Band appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for 43 Electro Swing is 75 out of 100 points across 7 verification signals from App Store and developer data.


## Frequently asked questions about 43 Electro Swing

### What is 43 Electro Swing: Jazz Band?

43 Electro Swing: Jazz Band is a music application that uses AI to write and play complete electro swing songs with a virtual band. It offers a unique approach to music generation through chaos mathematics.

### Does 43 Electro Swing: Jazz Band work offline?

Yes, all the necessary components, including the band and instruments, are included within the app. This allows you to create and enjoy music without an internet connection.

### Can I play along with the music generated by 43 Electro Swing: Jazz Band?

Yes, you can play over the generated music. The app provides interactive pads that correspond to the song's key and a sixteen-step lane that swings with the song.

### What musical styles does 43 Electro Swing: Jazz Band offer?

The app features eleven distinct styles, including Electro Swing, Hot Club House, Big Band Boogie, Jump Blues, Noir Swing, Swing Hop, Balkan Beats, Charleston, Cabaret Lounge, Electro Dixie, and Swing Step.

### Can I export my creations from 43 Electro Swing: Jazz Band?

Yes, you can export your songs as a MIDI file or a WAV mix. Additionally, you can export stems, with one WAV file per part, directly within the app.

### How does 43 Electro Swing: Jazz Band use chaos mathematics?

The app utilizes chaos mathematics, such as a Lorenz attractor for melody and a logistic map for rhythm, to generate unique musical elements. A filtering model is applied to ensure musicality and reward swinging intervals.

### What instruments are included in the virtual band?

The virtual band comprises two gypsy-jazz rhythm guitars, a lead instrument (clarinet, trumpet, alto sax, or guitar), a three-piece horn section, upright and sub bass, keys, a swing kit, and a producer's house beat.

### Is 43 Electro Swing: Jazz Band suitable for all ages?

The app has an age rating of 4+, making it suitable for a wide range of users. It is available on iPhone and iPad.

## Version history (last 4 releases)

### 1.0.3 — 2026-10-20

Export fix to some older devices.

### 1.0.2 — 2026-09-25

- Improved power and cpu usage.

### 1.0.1 — 2026-09-21

Minor bug fix and improvements.

### 1.0.0 — 2026-09-21

No release notes.

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## More apps by Soft Brew Mobile

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All apps by Soft Brew Mobile: https://appshunter.io/developer/561703410

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-24.*
