Lyria 3 Serverless API

Generate 30-second songs with vocals from text or images.

POST /v2/lyria-3 · submit + poll
 1# pip install "segmind>=1.1.0"
 2# export SEGMIND_API_KEY="YOUR_API_KEY"
 3import segmind
 4
 5# Async (v2): submit to the queue and block until COMPLETED.
 6# run() returns the final result dict (600s deadline, 1.0s poll by default).
 7result = segmind.run(
 8    "lyria-3",
 9    prompt="An uplifting indie-pop anthem at 120 BPM in C major. Bright acoustic and electric guitars, punchy live drums, warm bass, shimmering synth pads, and a catchy female lead vocal with layered harmonies. [Verse] We were driving through the night, chasing lights so far away. [Chorus] Hold on, hold on, the morning's on its way, we're gonna be okay. Full-band arrangement with clear vocals, polished radio-ready mix.",
10)
11print(result["status"])                      # COMPLETED
12print(result.get("output"))                  # model output (e.g. media URL)
13print(result["metrics"]["inference_time"])   # server compute seconds
14
15# --- Or submit + poll manually (track request_id, control the cadence) ---
16from segmind import SegmindClient, InferenceFailed, InferenceTimeout
17
18client = SegmindClient()                      # reads SEGMIND_API_KEY
19payload = {
20    "prompt": "An uplifting indie-pop anthem at 120 BPM in C major. Bright acoustic and electric guitars, punchy live drums, warm bass, shimmering synth pads, and a catchy female lead vocal with layered harmonies. [Verse] We were driving through the night, chasing lights so far away. [Chorus] Hold on, hold on, the morning's on its way, we're gonna be okay. Full-band arrangement with clear vocals, polished radio-ready mix.",
21}
22job = client.submit_async("lyria-3", **payload)
23print(job.request_id)                         # available immediately
24try:
25    result = job.wait(timeout=600, interval=1.0)
26except InferenceTimeout as e:
27    print("still running:", e.request_id)
28except InferenceFailed as e:
29    print("failed:", e.detail)

API Endpoint

POSThttps://api.segmind.com/v1/lyria-3

Parameters

promptrequired
string

Describe the song: genre, instruments, BPM, key, mood. Use [Verse], [Chorus] and [Bridge] tags or [0:00 - 0:10] timestamps to shape the structure, paste your own lyrics, or add "instrumental only, no vocals" for a backing track. Lyrics come back in the language you prompt in.

Default: "A 30-second lo-fi hip hop beat with dusty vinyl crackle, mellow Rhodes piano chords, a slow boom-bap drum pattern at 85 BPM, and a jazzy upright bass line. Instrumental only."
image_urlsoptional
string[]

Optional reference images. Lyria 3 accepts up to 10 and composes music inspired by their mood, colour and subject.

Default: []

Response Type

Returns: Audio

Asynchronous requests (v2)

Use Async for video, long-running (>~60s), or high-concurrency workloads; Sync is simplest for fast image & LLM calls. Async submits a request and you poll it to completion.

  1. 1
    POST /v2/lyria-3

    Submitreturns request_id, status_url, response_url

  2. 2
    GET /v2/requests/{id}/status

    Polluntil COMPLETED or FAILED

  3. 3
    GET /v2/requests/{id}

    Resultfinal response body

Status states

QUEUEDAccepted, waiting for a worker
PROCESSINGRunning on a worker
COMPLETEDDone — result body is ready
FAILEDErrored (incl. content/RAI blocks)
  • A FAILED request is served as HTTP 422 — the body still carries the error detail.
  • An unknown or expired request_id returns HTTP 404.
  • Results are retained for 1 hour, then expire.
  • Content / RAI blocks surface as FAILED, not a separate state.
  • Track completion by polling the status endpoint.

Common Error Codes

The API returns standard HTTP status codes. Detailed error messages are provided in the response body.

400

Bad Request

Invalid parameters or request format

401

Unauthorized

Missing or invalid API key

403

Forbidden

Insufficient permissions

404

Not Found

Model or endpoint not found

406

Insufficient Credits

Not enough credits to process request

429

Rate Limited

Too many requests

500

Server Error

Internal server error

502

Bad Gateway

Service temporarily unavailable

504

Timeout

Request timed out