Generate music using ElevenLabs Music API. Use when creating instrumental tracks, songs with lyrics, background music, jingles, or any AI-generated music composition. Supports prompt-based generation, composition plans for granular control, and detailed output with metadata.
npxskills add elevenlabs/skills--skill musicLoading…
Generate music from text prompts - supports instrumental tracks, songs with lyrics, and fine-grained control via composition plans.
Setup: See Installation Guide. For JavaScript, use
@elevenlabs/*packages only.
All examples below default to music_v2, the current generation model. Pass model_id="music_v1" only when explicitly requested to.
from elevenlabs import ElevenLabs
client = ElevenLabs()
audio = client.music.compose(
prompt="A chill lo-fi hip hop beat with jazzy piano chords",
music_length_ms=30000,
model_id="music_v2",
)
with open("output.mp3", "wb") as f:
for chunk in audio:
f.write(chunk)
import { ElevenLabsClient } from "@elevenlabs/elevenlabs-js";
import { createWriteStream } from "fs";
const client = new ElevenLabsClient();
const audio = await client.music.compose({
prompt: "A chill lo-fi hip hop beat with jazzy piano chords",
musicLengthMs: 30000,
modelId: "music_v2",
});
audio.pipe(createWriteStream("output.mp3"));
curl -X POST "https://api.elevenlabs.io/v1/music" \
-H "xi-api-key: $ELEVENLABS_API_KEY" -H "Content-Type: application/json" \
-d '{"prompt": "A chill lo-fi beat", "music_length_ms": 30000, "model_id": "music_v2"}' \
--output output.mp3
| Method | Description |
|---|---|
music.compose | Generate audio from a prompt or composition plan |
music.stream | Stream audio chunks as they are generated (paid plans) |
music.composition_plan.create | Generate a structured plan for fine-grained control |
music.compose_detailed | Generate audio + composition plan + metadata; pass store_for_inpainting=True to enable inpainting |
music.compose_detailed_stream | Stream audio plus composition plan, metadata, and optional word timestamps as Server-Sent Events |
music.video_to_music | Generate background music from one or more uploaded video files |
music.upload | Upload an audio file for later inpainting workflows, optionally extracting its composition plan or word-level timestamps |
See API Reference for full parameter details.
music.upload is available to enterprise clients with access to the inpainting feature.
Generate background music from uploaded video clips via
POST /v1/music/video-to-music
(client.music.video_to_music). This is separate from prompt-based
music.compose (POST /v1/music).
The API combines videos in order, accepts an optional natural-language description, and lets you
steer style with up to 10 tags such as upbeat or cinematic. This endpoint still defaults to
music_v1; pass model_id="music_v2" to use the newer model.
from elevenlabs import ElevenLabs
client = ElevenLabs()
audio = client.music.video_to_music(
videos=["trailer.mp4"],
description="Build suspense, then resolve with a warm cinematic finish.",
tags=["cinematic", "suspenseful", "uplifting"],
model_id="music_v2",
)
with open("video-score.mp3", "wb") as f:
for chunk in audio:
f.write(chunk)
import { ElevenLabsClient } from "@elevenlabs/elevenlabs-js";
import { createReadStream, createWriteStream } from "fs";
const client = new ElevenLabsClient();
const audio = await client.music.videoToMusic({
videos: [createReadStream("trailer.mp4")],
description: "Build suspense, then resolve with a warm cinematic finish.",
tags: ["cinematic", "suspenseful", "uplifting"],
modelId: "music_v2",
});
audio.pipe(createWriteStream("video-score.mp3"));
curl -X POST "https://api.elevenlabs.io/v1/music/video-to-music" \
-H "xi-api-key: $ELEVENLABS_API_KEY" \
-F "[email protected]" \
-F "description=Build suspense, then resolve with a warm cinematic finish." \
-F "tags=cinematic" \
-F "tags=suspenseful" \
-F "tags=uplifting" \
-F "model_id=music_v2" \
--output video-score.mp3
Constraints from the current API schema:
description for high-level musical direction and tags for concise style cuesmusic_v2 composition plans are an ordered list of chunks. Each chunk specifies its own
text (section label, lyrics, inline cues), duration_ms, positive_styles, negative_styles,
and context_adherence (low, medium, or high, default high). Up to 30 chunks per plan,
each 3,000–120,000 ms, total length 3 s to 10 minutes.
Generate a plan first, edit it, then compose:
plan = client.music.composition_plan.create(
prompt="An epic orchestral piece building to a climax",
music_length_ms=60000,
model_id="music_v2",
)
# Edit chunks in place
plan["chunks"][0]["text"] = "[Intro]\nQuiet strings rising"
audio = client.music.compose(
composition_plan=plan,
model_id="music_v2",
)
const plan = await client.music.compositionPlan.create({
prompt: "An epic orchestral piece building to a climax",
musicLengthMs: 60000,
modelId: "music_v2",
});
plan.chunks[0].text = "[Intro]\nQuiet strings rising";
const audio = await client.music.compose({
compositionPlan: plan,
modelId: "music_v2",
});
Or hand-build a plan to control lyrics and style per section:
composition_plan = {
"chunks": [
{
"text": "[Verse]\nWalking down an empty street",
"duration_ms": 15000,
"positive_styles": ["pop", "upbeat", "female vocals", "acoustic guitar"],
"negative_styles": ["dark", "slow"],
"context_adherence": "high",
},
{
"text": "[Chorus]\nThis is my moment",
"duration_ms": 15000,
"positive_styles": ["powerful vocals", "full band"],
"negative_styles": [],
"context_adherence": "high",
},
]
}
audio = client.music.compose(composition_plan=composition_plan, model_id="music_v2")
const compositionPlan = {
chunks: [
{
text: "[Verse]\nWalking down an empty street",
durationMs: 15000,
positiveStyles: ["pop", "upbeat", "female vocals", "acoustic guitar"],
negativeStyles: ["dark", "slow"],
contextAdherence: "high",
},
{
text: "[Chorus]\nThis is my moment",
durationMs: 15000,
positiveStyles: ["powerful vocals", "full band"],
negativeStyles: [],
contextAdherence: "high",
},
],
};
const audio = await client.music.compose({
compositionPlan,
modelId: "music_v2",
});
Put broader characteristics (genre, instrumentation, vocal style) in positive_styles, not in
text. The first chunk's styles set the overall tone — include 6–7 styles there.
Use the output_format query parameter on compose, detailed compose, or stream requests to select
the generated audio format. auto chooses a model-appropriate MP3 format; for music_v2, it
selects mp3_48000_192. Higher-bitrate MP3 options include mp3_48000_240 and mp3_48000_320.
For paid plans, stream audio chunks as they are generated instead of waiting for the full file:
from io import BytesIO
stream = client.music.stream(
prompt="A driving synthwave track with arpeggiated leads",
music_length_ms=30000,
model_id="music_v2",
)
buffer = BytesIO()
for chunk in stream:
if chunk:
buffer.write(chunk)
const stream = await client.music.stream({
prompt: "A driving synthwave track with arpeggiated leads",
musicLengthMs: 30000,
modelId: "music_v2",
});
const chunks: Buffer[] = [];
for await (const chunk of stream) {
chunks.push(chunk);
}
Use detailed streaming when the application needs generated music metadata while audio is still
arriving. POST /v1/music/detailed/stream accepts the same prompt or composition-plan body as
detailed compose, streams text/event-stream, and can include word timestamps with
with_timestamps.
curl -N -X POST "https://api.elevenlabs.io/v1/music/detailed/stream?output_format=auto" \
-H "xi-api-key: $ELEVENLABS_API_KEY" \
-H "Content-Type: application/json" \
-d '{"prompt": "A bright indie pop hook with warm guitars", "music_length_ms": 30000, "model_id": "music_v2", "with_timestamps": true}'
Inpainting edits or extends a stored song by mixing audio reference chunks (unchanged slices of a stored song) with new generation chunks in a single composition plan.
Step 1 — get a song_id, either by storing a fresh generation or uploading existing audio:
# Option A: keep a generation for later editing
result = client.music.compose_detailed(
prompt="An upbeat pop song with verse and chorus",
music_length_ms=60000,
model_id="music_v2",
store_for_inpainting=True,
)
song_id = result.song_id
# Option B: upload an existing track and extract its plan
uploaded = client.music.upload(
file=open("my-song.mp3", "rb"),
extract_composition_plan="music_v2",
)
song_id = uploaded.song_id
composition_plan = uploaded.composition_plan
import { createReadStream } from "fs";
// Option A: keep a generation for later editing
const result = await client.music.composeDetailed({
prompt: "An upbeat pop song with verse and chorus",
musicLengthMs: 60000,
modelId: "music_v2",
storeForInpainting: true,
});
let songId = result.songId;
// Option B: upload an existing track and extract its plan
const uploaded = await client.music.upload({
file: createReadStream("my-song.mp3"),
extractCompositionPlan: "music_v2",
});
songId = uploaded.songId;
const compositionPlan = uploaded.compositionPlan;
Step 2 — compose a plan that references the stored audio and regenerates the part you want to change:
plan = {
"chunks": [
{"song_id": song_id, "range": {"start_ms": 0, "end_ms": 30000}},
{
"text": "[Chorus]\nWe're rising up tonight",
"duration_ms": 30000,
"positive_styles": ["bigger drums", "layered vocals", "anthemic"],
"negative_styles": ["sparse"],
"context_adherence": "high",
},
]
}
audio = client.music.compose(composition_plan=plan, model_id="music_v2")
const plan = {
chunks: [
{ songId, range: { startMs: 0, endMs: 30000 } },
{
text: "[Chorus]\nWe're rising up tonight",
durationMs: 30000,
positiveStyles: ["bigger drums", "layered vocals", "anthemic"],
negativeStyles: ["sparse"],
contextAdherence: "high",
},
],
};
const audio = await client.music.compose({
compositionPlan: plan,
modelId: "music_v2",
});
To match the feel of a stored slice without copying it, attach a conditioning_ref (up to
30,000 ms) plus a condition_strength of low, medium, high, or xhigh to a generation
chunk. Conditioning placed on the first chunk influences every later chunk.
See API Reference for the full inpainting parameter list.
bad_prompt errors include a prompt_suggestion with alternative phrasingbad_composition_plan errors include a composition_plan_suggestiontry:
audio = client.music.compose(prompt="...", music_length_ms=30000)
except Exception as e:
print(f"API error: {e}")
try {
const audio = await client.music.compose({
prompt: "...",
musicLengthMs: 30000,
});
} catch (err) {
console.error("API error:", err);
}
Common errors: 401 (invalid key), 422 (invalid params), 429 (rate limit).
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