DiffRhythm: Lyrics to Song | Text to Audio

fal-ai/diffrhythm

DiffRhythm is a blazing fast model for transforming lyrics into full songs. It boasts the capability to generate full songs in less than 30 seconds.

Inference

Commercial use

Schema

Playground API

About

Generate

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

Migrate to @fal-ai/client

The @fal-ai/serverless-client package has been deprecated in favor of @fal-ai/client. Please check the migration guide for more information.

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/diffrhythm", {
  input: {
    lyrics: "[00:10.00]Moonlight spills through broken blinds
  [00:13.20]Your shadow dances on the dashboard shrine
  [00:16.85]Neon ghosts in gasoline rain
  [00:20.40]I hear your laughter down the midnight train
  [00:24.15]Static whispers through frayed wires
  [00:27.65]Guitar strings hum our cathedral choirs
  [00:31.30]Flicker screens show reruns of June
  [00:34.90]I'm drowning in this mercury lagoon
  [00:38.55]Electric veins pulse through concrete skies
  [00:42.10]Your name echoes in the hollow where my heartbeat lies
  [00:45.75]We're satellites trapped in parallel light
  [00:49.25]Burning through the atmosphere of endless night
  [01:00.00]Dusty vinyl spins reverse
  [01:03.45]Our polaroid timeline bleeds through the verse
  [01:07.10]Telescope aimed at dead stars
  [01:10.65]Still tracing constellations through prison bars
  [01:14.30]Electric veins pulse through concrete skies
  [01:17.85]Your name echoes in the hollow where my heartbeat lies
  [01:21.50]We're satellites trapped in parallel light
  [01:25.05]Burning through the atmosphere of endless night
  [02:10.00]Clockwork gears grind moonbeams to rust
  [02:13.50]Our fingerprint smudged by interstellar dust
  [02:17.15]Velvet thunder rolls through my veins
  [02:20.70]Chasing phantom trains through solar plane
  [02:24.35]Electric veins pulse through concrete skies
  [02:27.90]Your name echoes in the hollow where my heartbeat lies
  "
  },
  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"
});

Protect your API Key

When running code on the client-side (e.g. in a browser, mobile app or GUI applications), make sure to not expose your FAL_KEY. Instead, use a server-side proxy to make requests to the API. For more information, check out our server-side integration guide.

3. Queue#

Long-running requests

For long-running requests, such as training jobs or models with slower inference times, it is recommended to check the Queue status and rely on Webhooks instead of blocking while waiting for the result.

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/diffrhythm", {
  input: {
    lyrics: "[00:10.00]Moonlight spills through broken blinds
  [00:13.20]Your shadow dances on the dashboard shrine
  [00:16.85]Neon ghosts in gasoline rain
  [00:20.40]I hear your laughter down the midnight train
  [00:24.15]Static whispers through frayed wires
  [00:27.65]Guitar strings hum our cathedral choirs
  [00:31.30]Flicker screens show reruns of June
  [00:34.90]I'm drowning in this mercury lagoon
  [00:38.55]Electric veins pulse through concrete skies
  [00:42.10]Your name echoes in the hollow where my heartbeat lies
  [00:45.75]We're satellites trapped in parallel light
  [00:49.25]Burning through the atmosphere of endless night
  [01:00.00]Dusty vinyl spins reverse
  [01:03.45]Our polaroid timeline bleeds through the verse
  [01:07.10]Telescope aimed at dead stars
  [01:10.65]Still tracing constellations through prison bars
  [01:14.30]Electric veins pulse through concrete skies
  [01:17.85]Your name echoes in the hollow where my heartbeat lies
  [01:21.50]We're satellites trapped in parallel light
  [01:25.05]Burning through the atmosphere of endless night
  [02:10.00]Clockwork gears grind moonbeams to rust
  [02:13.50]Our fingerprint smudged by interstellar dust
  [02:17.15]Velvet thunder rolls through my veins
  [02:20.70]Chasing phantom trains through solar plane
  [02:24.35]Electric veins pulse through concrete skies
  [02:27.90]Your name echoes in the hollow where my heartbeat lies
  "
  },
  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/diffrhythm", {
  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/diffrhythm", {
  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);

Auto uploads

The client will auto-upload the file for you if you pass a binary object (e.g. File, Data).

Read more about file handling in our file upload guide.

5. Schema#

Input#

lyrics string* required

The prompt to generate the song from. Must have two sections. Sections start with either [chorus] or a [verse].

reference_audio_url string

The URL of the reference audio to use for the music generation.

style_prompt string

The style prompt to use for the music generation.

music_duration MusicDurationEnum

The duration of the music to generate. Default value: "95s"

Possible enum values: 95s, 285s

cfg_strength float

The CFG strength to use for the music generation. Default value: 4

scheduler SchedulerEnum

The scheduler to use for the music generation. Default value: "euler"

Possible enum values: euler, midpoint, rk4, implicit_adams

num_inference_steps integer

The number of inference steps to use for the music generation. Default value: 32

{
  "lyrics": "[00:10.00]Moonlight spills through broken blinds\n[00:13.20]Your shadow dances on the dashboard shrine\n[00:16.85]Neon ghosts in gasoline rain\n[00:20.40]I hear your laughter down the midnight train\n[00:24.15]Static whispers through frayed wires\n[00:27.65]Guitar strings hum our cathedral choirs\n[00:31.30]Flicker screens show reruns of June\n[00:34.90]I'm drowning in this mercury lagoon\n[00:38.55]Electric veins pulse through concrete skies\n[00:42.10]Your name echoes in the hollow where my heartbeat lies\n[00:45.75]We're satellites trapped in parallel light\n[00:49.25]Burning through the atmosphere of endless night\n[01:00.00]Dusty vinyl spins reverse\n[01:03.45]Our polaroid timeline bleeds through the verse\n[01:07.10]Telescope aimed at dead stars\n[01:10.65]Still tracing constellations through prison bars\n[01:14.30]Electric veins pulse through concrete skies\n[01:17.85]Your name echoes in the hollow where my heartbeat lies\n[01:21.50]We're satellites trapped in parallel light\n[01:25.05]Burning through the atmosphere of endless night\n[02:10.00]Clockwork gears grind moonbeams to rust\n[02:13.50]Our fingerprint smudged by interstellar dust\n[02:17.15]Velvet thunder rolls through my veins\n[02:20.70]Chasing phantom trains through solar plane\n[02:24.35]Electric veins pulse through concrete skies\n[02:27.90]Your name echoes in the hollow where my heartbeat lies\n",
  "reference_audio_url": "https://storage.googleapis.com/falserverless/model_tests/diffrythm/rock_en.wav",
  "style_prompt": "pop",
  "music_duration": "95s",
  "cfg_strength": 4,
  "scheduler": "euler",
  "num_inference_steps": 32
}

Output#

audio File* required

Generated music file.

{
  "audio": {
    "file_size": 33554520,
    "file_name": "output.wav",
    "content_type": "application/octet-stream",
    "url": "https://v3.fal.media/files/elephant/VV4wtKXBpZL1bNv6en36t_output.wav"
  }
}

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.

file_data string

File data

DiffRhythm: Lyrics to Song Text to Audio

Table of contents

1. Calling the API

2. Authentication

3. Queue

4. Files

5. Schema

About

1. Calling the API#

Install the client#

Migrate to @fal-ai/client

Setup your API Key#

Submit a request#

2. Authentication#

API Key#

Protect your API Key

3. Queue#

Long-running requests

Submit a request#

Fetch request status#

Get the result#

4. Files#

Data URI (base64)#

Hosted files (URL)#

Uploading files#

Auto uploads

5. Schema#

Input#

Output#

Other types#

File#