Amadeus Code
Op. 17 · AI songwriting
Get
Op. 17 AI Songwriting Assistant

Sketch a song
in minutes.

Amadeus Code is an AI songwriting assistant trained on five centuries of popular music. Generate melodies over your chords, swap chord progressions from any Spotify track, tune theatricality and familiarity like dials, export MIDI to your DAW.

Get the app See it work
iOS & Android MIDI export Royalty-free 5-century corpus
Mvt. I–III Composition flow

From blank stave
to MIDI export.

Three movements. The AI proposes, you arrange. Every sketch lands in your DAW as MIDI you own, royalty-free.

STAGE · 01Movement I
I

Set the dials.

Pick range, note length, theatricality, familiarity, and era — five sliders that bias the corpus toward what you want. Or pull a chord progression straight from Spotify via Harmony Library.

STAGE · 02Movement II
II

Receive the sketch.

The AI returns a melody over your chord progression in seconds. Don't like it? Tap again — the model serves variations in the same key, era, and feel. Keep what works, throw the rest.

STAGE · 03Movement III
III

Export. Arrange. Release.

Hit export to get a standard MIDI file plus audio rendered with bass, drums, keys. Drop the MIDI into Logic, Ableton, Cubase, FL — finish the production yourself, release royalty-free.

Mvt. IV Signature capability

Steal the chords.
Write a new song.

Harmony Library is Amadeus Code's most-loved feature: search Spotify's catalogue from inside the app, lift the chord progression of any track, and have the AI compose a fresh melody on top. The structure of your favourite song, with melody that is unmistakably new.

  • Search any song on Spotify from inside the app — the AI extracts the chord progression and feeds it forward.
  • New melody, original — the line is generated, not sampled. You own the output and can release it commercially.
  • Iterate without limits — same chords, a hundred different melodies. Tap until something earns your ear.
  • Export as MIDI — drop straight into your DAW, replace instruments, finish the production any way you want.
Open Harmony Library
Harmony Library CAT-#0884-E-min
SourceSpotify track · "Atomic Lights"
KeyE minor
Tempo114 BPM
Formverse · pre · chorus
Em → G → D → Bm + new melody
Extracted · 2026-06-09 Royalty-free
Mvt. V Audience & use

For people
who need a co-writer.

Amadeus Code is a working tool — not a one-tap full-song generator. Four kinds of people pick it up and stay.

I
SW

Songwriters stuck

Writer's block, deadline tomorrow. Pull a chord progression, get ten melody options in five minutes, pick the one that sparks something.

II
PR

Producers prototyping

Demo a verse-chorus structure before booking studio time. Export the MIDI, swap instruments in Logic, present a sketch to the artist.

III
SY

Sync & content

Need a royalty-free verse in a 1970s soul feel for a brand video? Set era to 1965–1975, theatricality up, render and ship.

IV
HB

Hobbyists learning

The dials teach. Watch how moving "familiarity" from 0.2 to 0.8 changes the line — see harmony and voice-leading work in real time.

Op. 17 · §6 Feature catalogue

What's in the toolkit.

A short list of what Amadeus Code does on iOS, Android, and the web Cloud workspace.

§ 6.1 · Five-dial control

Five dials,
infinite sketches.

Range, note length, theatricality, familiarity, era — every output bias is one slider away. The model isn't a black box; it's a corpus you tune.

Range0.62
Theatricality0.78
Familiarity0.41
Era1965+
§ 6.2 · MIDI export

MIDI to any DAW.

Standard SMF + rendered audio. Logic, Ableton, Cubase, FL Studio, Pro Tools, Reaper — all fine.

§ 6.3 · Royalty-free

You own
the output.

Release the song. Sync to ads. Use it for content. The melodies are original and yours, no per-stream royalty.

§ 6.4 · Bass & drums

Not just
melody.

Bass channel (4 instruments), drums, optional keys. Mute or solo any layer. BPM editing. Build a sketch with the band already in it.

§ 6.5 · Cloud sync

Mobile +
web.

Sketch on the bus, refine in the studio. The Cloud workspace keeps every iteration; nothing gets lost between devices.

§ 6.6 · Era control

Train the AI
on your decade.

Move the era dial and the model biases toward the voice-leading, melodic intervals, and rhythmic feel of that period. Tin Pan Alley to 2010s indie — pick a decade, hear it.

1920s1940s1960s1970s1980s1990s2000s2010s
§7 Specimen comparison

Where Amadeus
fits — honestly.

Amadeus Code is a songwriting assistant — it makes sketches, not finished masters. If you want a one-prompt full song, you want Suno. Here's the honest landscape.

Amadeus Code Suno Soundraw Chord apps Real co-writer
Generates melodies over your chords Yes — signature No Full tracks only No Of course
Pull progressions from Spotify Harmony Library No No Some apps By ear
MIDI export for DAW SMF + audio Audio only Audio + stems Yes In the room
Full instrumental song generation Sketches only Yes — its job Yes No If they have a band
Royalty-free commercial use Yes Paid tier Yes N/A Split splits
Era / style dial control Five dials Text prompt Mood + genre No By taste
Honest: Amadeus makes ideas, not records. The output is a starting point you finish in your DAW. If you want a track ready for Spotify in one click, that's Suno or Udio. If you want a co-writer in your pocket who hands you melody options for the rest of your day, that's Amadeus.
§8 Field correspondence

Three takes,
one mixed review.

From songwriter forums and producer Discords. The 4-star one stays in on purpose.

★ ★ ★ ★ ★ § 8.1

"Pulled a chord progression from a Fleetwood Mac track. Had three usable melodies in twenty minutes. Wrote the second verse around one of them."

L
Lila S.Songwriter · Brooklyn
★ ★ ★ ★ ☆ § 8.2

"The sketches are real sketches. Don't expect a finished record. With that expectation set, it's a writer's-block killer."

D
Daniel O.Producer · Lagos
★ ★ ★ ★ ★ § 8.3

"Set era to 1970s, theatricality up. Got a chorus I would have taken six hours to write. Shipped the demo same day."

A
Aiko M.Sync writer · Tokyo
§9 Provenance

A Tokyo songwriter
turned the AI on himself.

Amadeus Code was founded in Tokyo in 2017 by Jun Inoue, a Berklee College of Music graduate ('97) who'd spent a decade inside a major Japanese music production house before going independent. The original premise was unfussy: build the songwriting assistant Jun himself wished he'd had when he was on a deadline at 2am.

The training corpus draws from popular music across roughly five centuries, leaning heavily on the twentieth-century catalogue. The model is built around music-theory primitives — harmonic function, voice-leading, common-tone modulation — not raw spectral data. That's why the five dials work the way they do: each one biases a parameter the theory already names.

What we'd flag honestly: Amadeus is for sketches, not records. The output is melody-and-progression-shaped, exported as MIDI to be finished in your DAW. If you want a one-tap full song, this is the wrong tool. There's a learning curve to the dials — most users find the sweet spot in a week. Sister-products — Amadeus Topline (lyrics), Evoke Music (royalty-free library), MusicTGA-HR (the API Roland licensed for AV products) — share the same engine.

For the company's main surface, the cloud workspace, and the iOS/Android apps, see amadeuscode.ai.

CatalogueK. 491
FoundedTokyo, 2017
FounderJun Inoue · Berklee '97
Users (lifetime)8,700+ writers
Sketches written16,000+
PlatformsiOS · Android · Web
Sister productsTopline · Evoke · TGA-HR
API customerRoland (TGA-HR)
ExportMIDI · WAV · MP3
Commercial useYes — royalty-free
Trial14 days free
§10 Caller queries

Things people
actually ask.

What exactly does Amadeus Code do?
Amadeus Code is an AI songwriting assistant. You feed it a chord progression — typed in directly, picked from a preset, or pulled from a Spotify track via Harmony Library — and adjust five dials (Range, Note length, Theatricality, Familiarity, Era). The app returns a melody on top of those chords, with bass and drums you can mute or solo. Export as MIDI plus rendered audio, drop into your DAW, finish the production. It does not generate full instrumental songs the way Suno does — it produces sketches you take further yourself.
Can I release the songs commercially?
Yes. Outputs you create with Amadeus Code are royalty-free for commercial release — Spotify, Apple Music, YouTube, sync, advertising. The melodies are original (generated, not sampled). The chord progressions themselves are not copyrightable, so using a progression you pulled via Harmony Library is fine; the audible song you produce is what you're publishing, and the melody on top is new.
How does Harmony Library work exactly?
Inside the app, you search Spotify's catalogue. When you pick a track, Amadeus Code extracts the chord progression and presents it as the harmonic bed. You then generate melody options on top. The pulled progression is the starting harmonic structure — the melody you receive is composed fresh by the model, not sampled from the source. Use it as a launchpad: keep what works, change keys, rearrange chord order.
What are the five dials and how do they work?
Range controls how wide the melodic interval span is. Note length biases toward longer sustained notes or shorter rhythmic patterns. Theatricality pushes the line toward dramatic intervals, leaps, and tension; lower values keep it conversational. Familiarity decides how close to common-practice voice-leading the output stays — high familiarity sounds expected, low familiarity gets adventurous. Era biases the model toward the melodic-rhythmic conventions of a specific period, roughly 1920s through 2010s.
Does it work with my DAW?
Yes — Amadeus exports standard MIDI (.mid) files plus rendered audio (WAV, MP3). MIDI imports into Logic, Ableton, Cubase, FL Studio, Pro Tools, Reaper, GarageBand, and any DAW that handles SMF. Once the MIDI is in your session, you can swap instruments, edit notes, change tempo, do whatever a normal MIDI track allows.
How much does it cost?
Amadeus Code offers a 14-day free trial that unlocks every feature. After the trial, the standard tier is a monthly subscription that includes unlimited sketches, full MIDI and audio export, and Harmony Library access. There's also a Pay-as-you-go option for people who only need files occasionally, and a Premium tier with developer API access for businesses (the API is what Roland licensed). Pricing details and current promotions are on the official site.
Is this going to replace a real songwriter?
No — and the team has been explicit about that since 2017. Amadeus is a co-writer that hands you ideas, not a finished-song generator. You still pick which line earns the chorus, write the lyrics, arrange the production, and make the call on what gets released. Professional songwriters use it for inspiration and writer's-block escape; the app doesn't claim more than that.
Where does the training data come from?
The corpus draws from popular music across roughly five centuries, with the bulk in the twentieth-century catalogue. The model is built around music-theory primitives — harmonic function, voice-leading, common-tone modulation, rhythmic patterns — rather than learning purely from spectral audio. That's why the dials map to named musical parameters and not opaque latent variables.
What about the sister products — Topline, Evoke, TGA-HR?
Amadeus Topline is a separate mobile app for writing and recording lyrics on top of Amadeus melodies. Evoke Music is a royalty-free AI-generated music library — finished tracks you license for content. MusicTGA-HR is the developer API; it lets external apps generate background music from non-musical descriptors like "summer travel" or "cosmetics ad" — Roland is the first published customer, used in their AV product line. All four share the same composition engine underneath.
Coda Press play

Open the app.
Write the next song.

Free for 14 days. iOS, Android, web Cloud. Sketches export as MIDI you own — drop them into your DAW and finish the record.

Get the app Open Harmony Library
iOS · Android · Web · MIDI export · 14-day trial · royalty-free