# Free AI music prompt generator (works with any AI song tool)

> Build a producer-style prompt for Lyro, Suno, Udio or any AI music tool. Pick genre, mood, instruments and vocals, then copy the full brief or a short version.

Source: https://lyromusic.com/ai-music-prompt-generator

# Free AI music prompt generator

Pick a genre, a mood, a few instruments and a vocal, and this tool writes a prompt the way a producer would brief a session: tempo, drums, bass, harmony, lead sounds, vocal character and mix. It runs in your browser, needs no account, and the result works in any text-to-music tool.

Genre

Mood

Energy: Steady

Instruments to feature

Pick up to five.

Vocals

Vocals

Language

Sound

Made for

Tempo (BPM)

Key

## Full brief

## Short version

Under 200 characters, for tools with a small style box.

[Make this track on Lyro](https://lyromusic.com/start)

## How to write an AI music prompt that worksSix rules

- **Name the genre and the tempo** A number beats an adjective. “Afro house, 122 BPM” tells a model more than “upbeat African dance music”.
- **Describe the drums and the bass first** Rhythm is the identity of most genres. Say what the kick does, how the hats move and what the bass sounds like.
- **Pick three or four instruments, not ten** Models blur when asked for everything. A short list gets you a clearer arrangement.
- **Say who is singing and in which language** Voice type, delivery and language, stated plainly. Repeat the language if pronunciation matters.
- **Describe the room and the mix** Words such as intimate, wide, warm, dry or club-ready change the result more than mood words do.
- **Leave artists out** Describe the sound instead of naming a performer. It is more precise, and most tools block names anyway.

## Prompts by genre

Eight ready-made prompts for every genre, with tempo, key and instrument notes.

[Open the prompt library](https://lyromusic.com/prompts)

## Questions

### Does this prompt generator use AI?

No. It assembles a prompt from rules written by producers, so it is instant, free and private: nothing you pick leaves your browser. Inside Lyro there is an AI version that writes three takes from a sentence and drafts lyrics in twelve languages.

### Will these prompts work in Suno or Udio?

Yes. They are plain English descriptions of a sound, which is what every text-to-music model reads. If the tool you use has a small style box, copy the short version.

### Why include the BPM and key?

Tempo is the strongest single signal of genre, and a stated key keeps harmony consistent. Some models follow them exactly, others treat them as a strong hint. On Lyro, ACE-Step locks to the exact tempo and key, which matters when the track has to sit on your own vocal or beat.

### Can I put lyrics in the prompt?

Keep them separate. The prompt describes the sound; lyrics go in the lyrics box with section tags such as [Verse] and [Chorus]. Mixing the two makes models sing your instructions.

### How long should a music prompt be?

Forty to seventy words is the sweet spot for most models: enough for rhythm, harmony, voice and mix, short enough that nothing is ignored.