Lyria 3 Pro Serverless API

Full-length text-to-music songs with vocals and lyrics.

POST /v2/lyria-3-pro · 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-pro",
 9    prompt="Create a 90-second uplifting indie folk-pop anthem about chasing the sunrise, in D major at 120 BPM, with fingerpicked acoustic guitar, layered vocal harmonies, warm bass, light hand claps and a soaring wide chorus.\n[Verse]\nWe left the city lights behind, chasing colors in the sky\n[Chorus]\nHold on, hold on, the morning's calling out our names\nWe're running toward the light, we'll never be the same",
10    image_urls=[],
11)
12print(result["status"])                      # COMPLETED
13print(result.get("output"))                  # model output (e.g. media URL)
14print(result["metrics"]["inference_time"])   # server compute seconds
15
16# --- Or submit + poll manually (track request_id, control the cadence) ---
17from segmind import SegmindClient, InferenceFailed, InferenceTimeout
18
19client = SegmindClient()                      # reads SEGMIND_API_KEY
20payload = {
21    "prompt": "Create a 90-second uplifting indie folk-pop anthem about chasing the sunrise, in D major at 120 BPM, with fingerpicked acoustic guitar, layered vocal harmonies, warm bass, light hand claps and a soaring wide chorus.\n[Verse]\nWe left the city lights behind, chasing colors in the sky\n[Chorus]\nHold on, hold on, the morning's calling out our names\nWe're running toward the light, we'll never be the same",
22    "image_urls": [],
23}
24job = client.submit_async("lyria-3-pro", **payload)
25print(job.request_id)                         # available immediately
26try:
27    result = job.wait(timeout=600, interval=1.0)
28except InferenceTimeout as e:
29    print("still running:", e.request_id)
30except InferenceFailed as e:
31    print("failed:", e.detail)

API Endpoint

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

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: "Create a 2-minute dreamy indie pop song about a summer road trip, in G major at 118 BPM, with bright acoustic guitar, warm vocal harmonies and a wide chorus.\n[Verse]\nDriving down the coastal line, radio static and sunshine\n[Chorus]\nWe are the echoes in the night, burning brighter than the light"
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-pro

    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