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fal-ai/lyria3

Lyria 3 is most recent music model from Google
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Table of contents

About

Generate 30-second music clips using Google's Lyria 3 model.

Lyria 3 is Google's high-fidelity music generation model that combines musical awareness and structural coherence. It generates 30-second music clips from text or image prompts, including vocals and lyrics.

For best results, prompts should include:

  • Genre/Style: e.g., "electronic", "classical", "hip hop", "jazz"
  • Mood/Emotion: e.g., "energetic", "melancholy", "uplifting"
  • Instrumentation: e.g., "piano", "synthesizer", "acoustic guitar"
  • Tempo: e.g., "128 BPM", "slow ballad", "fast tempo"
  • Vocal style: e.g., "male vocals", "female soprano", "rap"
  • Language: supports English, German, Spanish, French, Hindi, Japanese, Korean, Portuguese

The model outputs:

  • 30-second MP3 audio at 44.1 kHz / 192 kbps
  • Optional generated lyrics
  • SynthID watermarking for content provenance

Safety filters prevent generation of content mimicking real artists' voices.

1. Calling the API#

Install the client#

The client provides a convenient way to interact with the model API.

npm install --save @fal-ai/client

Setup your API Key#

Set FAL_KEY as an environment variable in your runtime.

export FAL_KEY="YOUR_API_KEY"

Submit a request#

The client API handles the API submit protocol. It will handle the request status updates and return the result when the request is completed.

import { fal } from "@fal-ai/client";

const result = await fal.subscribe("fal-ai/lyria3", {
  input: {
    prompt: "An energetic electronic dance track with soaring synth leads, punchy four-on-the-floor kick drums, and a catchy vocal hook singing 'Feel the rhythm, feel the night'. 128 BPM."
  },
  logs: true,
  onQueueUpdate: (update) => {
    if (update.status === "IN_PROGRESS") {
      update.logs.map((log) => log.message).forEach(console.log);
    }
  },
});
console.log(result.data);
console.log(result.requestId);

2. Authentication#

The API uses an API Key for authentication. It is recommended you set the FAL_KEY environment variable in your runtime when possible.

API Key#

In case your app is running in an environment where you cannot set environment variables, you can set the API Key manually as a client configuration.
import { fal } from "@fal-ai/client";

fal.config({
  credentials: "YOUR_FAL_KEY"
});

3. Queue#

Submit a request#

The client API provides a convenient way to submit requests to the model.

import { fal } from "@fal-ai/client";

const { request_id } = await fal.queue.submit("fal-ai/lyria3", {
  input: {
    prompt: "An energetic electronic dance track with soaring synth leads, punchy four-on-the-floor kick drums, and a catchy vocal hook singing 'Feel the rhythm, feel the night'. 128 BPM."
  },
  webhookUrl: "https://optional.webhook.url/for/results",
});

Fetch request status#

You can fetch the status of a request to check if it is completed or still in progress.

import { fal } from "@fal-ai/client";

const status = await fal.queue.status("fal-ai/lyria3", {
  requestId: "764cabcf-b745-4b3e-ae38-1200304cf45b",
  logs: true,
});

Get the result#

Once the request is completed, you can fetch the result. See the Output Schema for the expected result format.

import { fal } from "@fal-ai/client";

const result = await fal.queue.result("fal-ai/lyria3", {
  requestId: "764cabcf-b745-4b3e-ae38-1200304cf45b"
});
console.log(result.data);
console.log(result.requestId);

4. Files#

Some attributes in the API accept file URLs as input. Whenever that's the case you can pass your own URL or a Base64 data URI.

Data URI (base64)#

You can pass a Base64 data URI as a file input. The API will handle the file decoding for you. Keep in mind that for large files, this alternative although convenient can impact the request performance.

Hosted files (URL)#

You can also pass your own URLs as long as they are publicly accessible. Be aware that some hosts might block cross-site requests, rate-limit, or consider the request as a bot.

Uploading files#

We provide a convenient file storage that allows you to upload files and use them in your requests. You can upload files using the client API and use the returned URL in your requests.

import { fal } from "@fal-ai/client";

const file = new File(["Hello, World!"], "hello.txt", { type: "text/plain" });
const url = await fal.storage.upload(file);

Read more about file handling in our file upload guide.

5. Schema#

Input#

prompt string* required

The text prompt describing the music you want to generate. Include genre, mood, instrumentation, tempo, and vocal style for best results. Lyria 3 supports vocals, lyrics, and multi-language generation.

negative_prompt string

A description of what to exclude from the generated audio. Default value: ""

image_url string

Optional image URL to use as inspiration for music generation. The model will create music that matches the mood and theme of the image.

{
  "prompt": "An energetic electronic dance track with soaring synth leads, punchy four-on-the-floor kick drums, and a catchy vocal hook singing 'Feel the rhythm, feel the night'. 128 BPM.",
  "negative_prompt": "low quality, distorted",
  "image_url": "https://v3b.fal.media/files/b/0a93b559/qjT9o0CId1B65PbD6Yp06_9c94501900464c5aa98f302fa4b00375.png"
}

Output#

audio File* required

The generated music as an MP3 file.

lyrics string

The generated or provided lyrics for the track, if applicable.

{
  "audio": "https://v3b.fal.media/files/b/0a93b550/klduxmeWsmi304M3zsAlr_output.mp3",
  "lyrics": "Caption: This is a high-energy Progressive House anthem, a subgenre of EDM defined by its massive scale and uplifting melodic content, all polished with a clean, powerful, and wide stereo production aesthetic. The rhythmic foundation is a punchy, heavily compressed four-on-the-floor kick drum, modeled after a classic Roland TR-909, providing a relentless pulse at 128 BPM. Supporting the kick are crisp, bright open hi-hats on the off-beats and a thick clap/snare layer on beats 2 and 4. The harmonic and melodic core is built from multiple synth layers: vast, shimmering supersaw synth pads play a soaring major-key chord progression; a powerful, monophonic sawtooth bassline plays the root notes and is aggressively side-chained to the kick drum to create the genre's signature 'pumping' effect. Above it all, a soaring supersaw lead synth—composed of multiple detuned sawtooth waves to create a thick, wide sound—plays a memorable, uplifting arpeggiated melody. A powerful, clean female vocal delivers the catchy hook, processed with significant hall reverb and delay to make it feel enormous and seamlessly blend with the synths. The entire instrumental bed (pads, lead, bass) is also heavily side-chained to the kick, ensuring every element ducks in volume with each beat to maximize the kick's punch and drive the track forward.\nMosic: 4.5\nBPM: 128.0"
}

Other types#

File#

url string* required

The URL where the file can be downloaded from.

content_type string

The mime type of the file.

file_name string

The name of the file. It will be auto-generated if not provided.

file_size integer

The size of the file in bytes.