Flow Music
curl --request POST \
--url https://api.snapgen.org/v1/music/generations \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data '
{
"model": "<string>",
"version": "<string>",
"title": "<string>",
"sound_prompt": "<string>",
"lyrics": "<string>",
"bpm": 123,
"length": 123,
"seed": 123,
"webhook": "<string>",
"webhook_secret": "<string>"
}
'import requests
url = "https://api.snapgen.org/v1/music/generations"
payload = {
"model": "<string>",
"version": "<string>",
"title": "<string>",
"sound_prompt": "<string>",
"lyrics": "<string>",
"bpm": 123,
"length": 123,
"seed": 123,
"webhook": "<string>",
"webhook_secret": "<string>"
}
headers = {
"Authorization": "Bearer <token>",
"Content-Type": "application/json"
}
response = requests.post(url, json=payload, headers=headers)
print(response.text)const options = {
method: 'POST',
headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
body: JSON.stringify({
model: '<string>',
version: '<string>',
title: '<string>',
sound_prompt: '<string>',
lyrics: '<string>',
bpm: 123,
length: 123,
seed: 123,
webhook: '<string>',
webhook_secret: '<string>'
})
};
fetch('https://api.snapgen.org/v1/music/generations', options)
.then(res => res.json())
.then(res => console.log(res))
.catch(err => console.error(err));<?php
$curl = curl_init();
curl_setopt_array($curl, [
CURLOPT_URL => "https://api.snapgen.org/v1/music/generations",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "POST",
CURLOPT_POSTFIELDS => json_encode([
'model' => '<string>',
'version' => '<string>',
'title' => '<string>',
'sound_prompt' => '<string>',
'lyrics' => '<string>',
'bpm' => 123,
'length' => 123,
'seed' => 123,
'webhook' => '<string>',
'webhook_secret' => '<string>'
]),
CURLOPT_HTTPHEADER => [
"Authorization: Bearer <token>",
"Content-Type: application/json"
],
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}package main
import (
"fmt"
"strings"
"net/http"
"io"
)
func main() {
url := "https://api.snapgen.org/v1/music/generations"
payload := strings.NewReader("{\n \"model\": \"<string>\",\n \"version\": \"<string>\",\n \"title\": \"<string>\",\n \"sound_prompt\": \"<string>\",\n \"lyrics\": \"<string>\",\n \"bpm\": 123,\n \"length\": 123,\n \"seed\": 123,\n \"webhook\": \"<string>\",\n \"webhook_secret\": \"<string>\"\n}")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("Authorization", "Bearer <token>")
req.Header.Add("Content-Type", "application/json")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}HttpResponse<String> response = Unirest.post("https://api.snapgen.org/v1/music/generations")
.header("Authorization", "Bearer <token>")
.header("Content-Type", "application/json")
.body("{\n \"model\": \"<string>\",\n \"version\": \"<string>\",\n \"title\": \"<string>\",\n \"sound_prompt\": \"<string>\",\n \"lyrics\": \"<string>\",\n \"bpm\": 123,\n \"length\": 123,\n \"seed\": 123,\n \"webhook\": \"<string>\",\n \"webhook_secret\": \"<string>\"\n}")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.snapgen.org/v1/music/generations")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n \"model\": \"<string>\",\n \"version\": \"<string>\",\n \"title\": \"<string>\",\n \"sound_prompt\": \"<string>\",\n \"lyrics\": \"<string>\",\n \"bpm\": 123,\n \"length\": 123,\n \"seed\": 123,\n \"webhook\": \"<string>\",\n \"webhook_secret\": \"<string>\"\n}"
response = http.request(request)
puts response.read_bodyFlow Music
Flow Music
Generate a track from a style prompt, lyrics, or both with Flow Music (Google Lyria 3 Pro or Lyria 3.5). $0.09 per request.
POST
/
v1
/
music
/
generations
Flow Music
curl --request POST \
--url https://api.snapgen.org/v1/music/generations \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data '
{
"model": "<string>",
"version": "<string>",
"title": "<string>",
"sound_prompt": "<string>",
"lyrics": "<string>",
"bpm": 123,
"length": 123,
"seed": 123,
"webhook": "<string>",
"webhook_secret": "<string>"
}
'import requests
url = "https://api.snapgen.org/v1/music/generations"
payload = {
"model": "<string>",
"version": "<string>",
"title": "<string>",
"sound_prompt": "<string>",
"lyrics": "<string>",
"bpm": 123,
"length": 123,
"seed": 123,
"webhook": "<string>",
"webhook_secret": "<string>"
}
headers = {
"Authorization": "Bearer <token>",
"Content-Type": "application/json"
}
response = requests.post(url, json=payload, headers=headers)
print(response.text)const options = {
method: 'POST',
headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
body: JSON.stringify({
model: '<string>',
version: '<string>',
title: '<string>',
sound_prompt: '<string>',
lyrics: '<string>',
bpm: 123,
length: 123,
seed: 123,
webhook: '<string>',
webhook_secret: '<string>'
})
};
fetch('https://api.snapgen.org/v1/music/generations', options)
.then(res => res.json())
.then(res => console.log(res))
.catch(err => console.error(err));<?php
$curl = curl_init();
curl_setopt_array($curl, [
CURLOPT_URL => "https://api.snapgen.org/v1/music/generations",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "POST",
CURLOPT_POSTFIELDS => json_encode([
'model' => '<string>',
'version' => '<string>',
'title' => '<string>',
'sound_prompt' => '<string>',
'lyrics' => '<string>',
'bpm' => 123,
'length' => 123,
'seed' => 123,
'webhook' => '<string>',
'webhook_secret' => '<string>'
]),
CURLOPT_HTTPHEADER => [
"Authorization: Bearer <token>",
"Content-Type: application/json"
],
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}package main
import (
"fmt"
"strings"
"net/http"
"io"
)
func main() {
url := "https://api.snapgen.org/v1/music/generations"
payload := strings.NewReader("{\n \"model\": \"<string>\",\n \"version\": \"<string>\",\n \"title\": \"<string>\",\n \"sound_prompt\": \"<string>\",\n \"lyrics\": \"<string>\",\n \"bpm\": 123,\n \"length\": 123,\n \"seed\": 123,\n \"webhook\": \"<string>\",\n \"webhook_secret\": \"<string>\"\n}")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("Authorization", "Bearer <token>")
req.Header.Add("Content-Type", "application/json")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}HttpResponse<String> response = Unirest.post("https://api.snapgen.org/v1/music/generations")
.header("Authorization", "Bearer <token>")
.header("Content-Type", "application/json")
.body("{\n \"model\": \"<string>\",\n \"version\": \"<string>\",\n \"title\": \"<string>\",\n \"sound_prompt\": \"<string>\",\n \"lyrics\": \"<string>\",\n \"bpm\": 123,\n \"length\": 123,\n \"seed\": 123,\n \"webhook\": \"<string>\",\n \"webhook_secret\": \"<string>\"\n}")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.snapgen.org/v1/music/generations")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n \"model\": \"<string>\",\n \"version\": \"<string>\",\n \"title\": \"<string>\",\n \"sound_prompt\": \"<string>\",\n \"lyrics\": \"<string>\",\n \"bpm\": 123,\n \"length\": 123,\n \"seed\": 123,\n \"webhook\": \"<string>\",\n \"webhook_secret\": \"<string>\"\n}"
response = http.request(request)
puts response.read_bodyflow-music generates one track with Flow Music, which runs Google Lyria. Describe the sound in sound_prompt, supply lyrics, or both, and optionally set the tempo and length. Each request returns exactly one clip, which later Flow Music operations can extend, rework, split, export, or render as a video.
| Property | Value |
|---|---|
| Model ID | flow-music |
| Endpoint | POST /v1/music/generations (asynchronous task) |
| Group | Flow Music |
| Input | Text: a style prompt, lyrics, or both |
| Versions | lyria-3-pro (default) or lyria-3.5 |
| Length | 1 to 240 seconds |
| Result | One clip in result.tracks |
| Price | $0.09 per request (9 credits), for either version |
string
required
Set to
flow-music.string
default:"lyria-3-pro"
Lyria version:
lyria-3-pro (Lyria 3 Pro) or lyria-3.5 (Lyria 3.5).string
Title of the new clip, up to 120 characters.
string
Style or sound description, up to 2,000 characters, for example
upbeat pop music with piano. Send sound_prompt, lyrics, or both.string
Lyrics, up to 3,000 characters.
flow-music-lyrics can write them.integer
Tempo in beats per minute, from 1 to 300.
integer
Length of the track in seconds, from 1 to 240.
integer
Random seed, from 0 to 4,294,967,295. The same seed and request give similar, not identical, results.
string
Optional public
https URL that receives one signed event when the task finishes. See Task webhooks.string
Required with
webhook: 16 to 256 characters, used to sign the delivery.Request rules
The gateway checks these before it reserves any balance:- Send
sound_prompt,lyrics, or both.
Request
curl https://api.snapgen.org/v1/music/generations \
-H "Authorization: Bearer $SNAPGEN_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "flow-music",
"title": "Morning Drive",
"sound_prompt": "Upbeat pop with bright piano and handclaps",
"length": 60
}'
curl https://api.snapgen.org/v1/music/generations \
-H "Authorization: Bearer $SNAPGEN_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "flow-music",
"version": "lyria-3.5",
"title": "Longest Night",
"sound_prompt": "Anthemic rock ballad, big drums, soaring guitar",
"lyrics": "[Verse 1]\nEven the longest night turns to dawn\n[Chorus]\nWe rise again",
"bpm": 80,
"length": 120
}'
202 with a task object and a Location: /v1/tasks/{id}
header. Poll GET /v1/tasks/{id} every 10 to 20
seconds until status is succeeded or failed.
import json
import os
import time
from urllib.request import Request, urlopen
API = "https://api.snapgen.org/v1"
AUTH = {"Authorization": f"Bearer {os.environ['SNAPGEN_API_KEY']}"}
submit = Request(
f"{API}/music/generations",
data=json.dumps({
"model": "flow-music",
"title": "Morning Drive",
"sound_prompt": "Upbeat pop with bright piano and handclaps",
"length": 60,
}).encode(),
headers={**AUTH, "Content-Type": "application/json"},
)
with urlopen(submit) as response:
task = json.load(response)
while task["status"] in ("queued", "processing"):
time.sleep(15)
with urlopen(Request(f"{API}/tasks/{task['id']}", headers=AUTH)) as response:
task = json.load(response)
if task["status"] != "succeeded":
raise RuntimeError(task["error"])
print(task["result"]["tracks"][0]["audio_url"])
const API = "https://api.snapgen.org/v1";
const auth = { Authorization: `Bearer ${process.env.SNAPGEN_API_KEY}` };
const submitted = await fetch(`${API}/music/generations`, {
method: "POST",
headers: { ...auth, "Content-Type": "application/json" },
body: JSON.stringify({
model: "flow-music",
title: "Morning Drive",
sound_prompt: "Upbeat pop with bright piano and handclaps",
length: 60,
}),
});
if (!submitted.ok) throw new Error(await submitted.text());
let task = await submitted.json();
while (task.status === "queued" || task.status === "processing") {
await new Promise((resolve) => setTimeout(resolve, 15_000));
task = await (await fetch(`${API}/tasks/${task.id}`, { headers: auth })).json();
}
if (task.status !== "succeeded") throw new Error(JSON.stringify(task.error));
console.log(task.result.tracks[0].audio_url);
Result
One clip inresult.tracks[0], with its audio_url and, when the provider
returns them, wav_url and duration_seconds. result.urls lists the audio
file.
{
"urls": [
"https://cdn.example.com/music/morning-drive.m4a"
],
"tracks": [
{
"index": 1,
"id": "a41aade4-993e-4d28-b56f-d97e7ef7167c",
"audio_url": "https://cdn.example.com/music/morning-drive.m4a",
"wav_url": "https://cdn.example.com/music/morning-drive.wav",
"duration_seconds": 60.2
}
]
}
Next steps
Pass this task’sid as source_task_id to another Flow Music model. Each
edit returns a new clip, so chain the latest task for the next step.
| Model | Does | Price |
|---|---|---|
flow-music-extend | Continues the clip from a chosen second by up to 164 seconds. | $0.09 |
flow-music-replace | Regenerates a time range from an instruction. | $0.09 |
flow-music-cover | Rearranges the whole clip in a new style. | $0.09 |
flow-music-stems | Splits vocals and instrumental into a ZIP archive. | $0.09 |
flow-music-download | Exports the clip as MP3 or WAV. | $0.03 |
flow-music-video | Renders the clip into an MP4 video. | $0.03 |
Result URLs are kept for about 72 hours. Download the files you want to
keep. See Music generation tasks for
task references, webhooks, and errors.