Core 3
1 tokenFast, dependable composition for everyday musical ideas.
Notation-led AI for musicians and educators
Turn ideas into music you can keep developing.
Describe the music you imagine. ImpromptuAI creates an original notated score and audio from a simple text prompt. Then keep working on it — open any saved score, describe what you want to change, and create a new version while preserving the original.
Free to download · Pay as you go · No subscription required
New in ImpromptuAI
Better AI. Editable scores.
ImpromptuAI is no longer limited to generating a first draft. The latest version introduces upgraded AI models and a score-editing workflow designed around how musicians actually develop ideas.
Choose the right AI for the score
Choose between Core 3, Core 3+, Insight 3 and Insight 3+ depending on the complexity of the musical task.
Core 3+
2 tokensMore capable for demanding scores, larger ensembles and complex instructions.
Insight 3
1 tokenAn alternative composition engine with strong musical interpretation.
Insight 3+
2 tokensAdvanced generation for particularly involved musical requests.
Pay as you go with token bundles of 5 or 25. No subscription required.
Edit music in natural language
Saved scores remain editable in My Scores. Open a composition, tap Edit, and simply describe the musical change you want.
My Scores Edit Describe the change Create New Version
- “Make the trumpet melody more syncopated.”
- “Rewrite the ending more softly.”
- “Give the cello a countermelody.”
- “Make the harmony darker in the middle section.”
ImpromptuAI creates a complete new version instead of overwriting your original score.
Every version stays yours
Editing never silently replaces the previous score. Each revision is saved as a new version, letting you compare ideas, return to earlier material and continue developing the composition.
Original→Version 2→Version 3
How it works
From musical idea to evolving score.
Describe, generate, listen, edit and create a new version whenever the music takes a different direction.
1
Describe the music
Choose the instruments, style, mood, key, metre, structure and musical character you have in mind.
2
Generate notation and audio
ImpromptuAI creates an original engraved musical score together with an audio preview.
3
Listen and inspect
Read the notation, hear the result and decide what you want to develop.
4
Edit naturally
Open a saved score and describe the musical change in ordinary language.
5
Create a new version
ImpromptuAI regenerates the score while preserving the original, so the music can continue evolving.
Notation first
Notation at the centre. Musicians in control.
ImpromptuAI is built around music as something people can read, analyse, teach, rehearse, perform and develop — not merely an audio file generated by a machine.
✓
Your musical choicesDirect the ensemble, style, harmony, metre, form, mood and character through natural language.
✓
Notated score and audio togetherSee the structure of the composition and hear an audio representation of every generated score.
✓
Separate instrument partsOpen individual parts alongside the full score for study, rehearsal and performance.
✓
Editable musical ideasReturn to saved compositions and request musical changes without editing notation code.
✓
Original versions preservedEach edit creates a new score rather than silently replacing earlier work.
✓
Built for musical practiceA creative starting point for musicians, performers, composers, students and educators.
Corporate membership
Proud Corporate Member of TiME.
ImpromptuAI is a Corporate Member of Technology in Music Education (TiME), joining a community focused on thoughtful and effective uses of technology in music learning and practice.
Inside the app
See the latest ImpromptuAI in action.
Real screens from version 1.2.0: generation, AI score editing, instrument parts and music for different ensembles.
About ImpromptuAI
AI should expand musical control.
ImpromptuAI is an independent UK music-technology company built around a simple idea: creating written music should begin with musical intent, not hours of entering notes.
The vision is to give musicians, performers, composers and educators a faster route from an imagined sound to notation they can inspect, hear, teach from, perform and develop.
Matt Winnel
Founder · Musician · Physicist · Developer
ImpromptuAI is currently a one-person team, built by Dr Matthew Winnel. Matt combines formal music training and performance experience with a PhD in computational physics and deep-tech software expertise. He designed and built the iOS app and backend, bringing together AI, music engraving and audio technology.
Contact
Talk to ImpromptuAI.
Questions, feedback, partnerships or press enquiries are welcome. For app-account or technical issues, use the support address below.
AI transparency
AI-generated, clearly identified.
ImpromptuAI is designed to be transparent about the role of artificial intelligence in the creative process. Generated scores can include ImpromptuAI provenance information, and generated audio can contain metadata identifying its AI-generated origin.
Copyright treatment of AI-generated and AI-assisted music differs between jurisdictions and may depend on the nature and extent of human creative contribution. Users remain responsible for considering the rules that apply when publishing, registering or commercially distributing generated work.
Music prompts and relevant score content are processed by third-party AI providers when you request a generation or edit. Read how ImpromptuAI handles your data.
What will you compose next?
Create a score from an idea, listen to it, change it and keep developing the music.