Reverse any track
into a prompt
Drop a song and get back its creative blueprint, genre, BPM, key, mood, instruments. Everything you need to recreate or remix.
Music to prompt, in seconds
Music to Prompt is a music to prompt tool: it listens to a track and writes the prompt behind it. Instead of guessing how to describe a sound to an AI music generator, you get a structured, accurate prompt drawn from what's actually in the audio, then generate it into a track right here, on your choice of AI model.
How it works
- 1
Drop
Upload or record a track. Analysis runs in your browser, so the audio never has to leave your device to be measured.
- 2
Analyse
We detect BPM, key, mode, duration and structure from the waveform, then interpret genre, mood and instrumentation.
- 3
Prompt
Get a clean, structured prompt that separates detected facts from interpretation, ready to generate or refine.
See it work, no sign-up
Pick a sample and watch a track resolve into a structured prompt. Detected values are measured from the audio; the interpreted layer is the model's reading of it.
BPM
74
Key
E minor
Duration
2:48
Energy
34%
Structure
Genre
Lo-fi hip hop
Mood
Descriptors
Instruments
Prompt
Lo-fi hip hop at 74 BPM in E minor. Mood: relaxed, nostalgic, warm and sleepy. dusty, vinyl crackle, tape saturation and boom-bap. Instrumentation: electric piano, upright bass, soft drums, vinyl noise and mellow pads. Structure: intro → verse → hook → verse → outro. Roughly 2:48.
Natural-language prompt
This is an example blueprint. Drop your own track for a real analysis measured from the audio.
Reverse your trackFree music tools
Just need one fact about a track? These run free in your browser, no upload, no account.
BPM Finder
Drop a track and get its tempo in beats per minute. Free, instant, and it never leaves your device.
Song Key Finder
Drop a track and get its musical key and scale. Free, instant, fully in your browser.
Song Analyzer
Drop a track and read its tempo, key, duration, energy and rough structure at a glance. Free and fully in your browser.
Song Structure Finder
Drop a track and see its rough arrangement, intro, verse, chorus, outro, estimated from the audio. Free and fully in your browser.
Frequently asked questions
- What is a music prompt?
- A music prompt is a short, structured text description of a track, its genre, BPM, key, mood and instrumentation, that a music generator like Suno or Udio can use to create something similar. It's the creative blueprint behind a song.
- How do I turn a song into a Suno prompt?
- Drop the track into the reverse tool. It analyses the audio in your browser to detect tempo, key, duration and structure, then composes a structured prompt describing the genre, mood and instruments, which you can generate into a track here on your choice of AI model.
- What does the reverse tool actually detect versus infer?
- BPM, key, mode, duration and rough structure are measured directly from the audio, these are detected facts. Genre, mood, descriptors and instruments are interpreted by a model from those features. The output always keeps the two apart so you know what's measured and what's a best guess.
- Is it free?
- Yes. Reversing a track, generating lyrics and enhancing prompts are free with a free account; generating full tracks runs on credits. The BPM finder, key finder and song analyzer are free with no sign-up at all.