> ## Documentation Index
> Fetch the complete documentation index at: https://docs.musixmatch.com/llms.txt
> Use this file to discover all available pages before exploring further.

# distribution.sync.post

> Requests word-level synchronization of plain-text lyrics against the audio of a track previously delivered via the delivery flow. Musixmatch aligns each word of the submitted lyrics to the recording and produces line-level LRC timing and word-level (rich) timing. Returns a `sync_request_id` to track progress with `GET /ws/1.1/distribution.sync.get`.



## OpenAPI

````yaml enterprises/distribution/openapi.json post /ws/1.1/distribution.sync.post
openapi: 3.1.0
info:
  title: Musixmatch Distribution API
  version: 1.0.0
  description: >-
    API for music distributors to submit releases and lyrics to the Musixmatch
    catalog.
servers:
  - url: https://api.musixmatch.com
security:
  - apiKey: []
paths:
  /ws/1.1/distribution.sync.post:
    post:
      tags:
        - Sync
      summary: distribution.sync.post
      description: >-
        Requests word-level synchronization of plain-text lyrics against the
        audio of a track previously delivered via the delivery flow. Musixmatch
        aligns each word of the submitted lyrics to the recording and produces
        line-level LRC timing and word-level (rich) timing. Returns a
        `sync_request_id` to track progress with `GET
        /ws/1.1/distribution.sync.get`.
      operationId: requestSync
      parameters:
        - $ref: '#/components/parameters/user_id'
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/SyncRequest'
            example:
              isrc: GBAAA9100070
              lyrics: |-
                Line one
                Line two
                Line three
              language: en
      responses:
        '200':
          description: Sync request accepted.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/SyncSubmitEnvelope'
              example:
                message:
                  header:
                    status_code: 200
                    execute_time: 0.32
                  body:
                    sync:
                      sync_request_id: 123456
                      status: pending
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
components:
  parameters:
    user_id:
      name: user_id
      in: query
      required: true
      schema:
        type: string
      description: The Musixmatch user ID obtained via token introspection
  schemas:
    SyncRequest:
      type: object
      required:
        - isrc
        - lyrics
        - language
      properties:
        isrc:
          type: string
          pattern: ^[A-Z]{2}-?[A-Z\d]{3}-?\d{2}-?\d{5}$
          description: >-
            International Standard Recording Code (ISRC) of the track to sync.
            The track audio must have been delivered.
        lyrics:
          type: string
          description: >-
            Plain-text lyrics as sung in the recording. Lines are separated by
            newlines.
        language:
          type: string
          pattern: ^[a-zA-Z]{2}$
          description: Language of the lyrics as an ISO 639-1 code (e.g. `en`, `es`, `fr`).
    SyncSubmitEnvelope:
      type: object
      properties:
        message:
          type: object
          properties:
            header:
              type: object
              properties:
                status_code:
                  type: integer
                  description: HTTP status code
                execute_time:
                  type: number
                  description: Server-side execution time in seconds
            body:
              type: object
              properties:
                sync:
                  type: object
                  properties:
                    sync_request_id:
                      type: integer
                      description: >-
                        Unique identifier for this sync request, used to poll
                        status
                    status:
                      type: string
                      enum:
                        - pending
                        - progress
                        - success
                        - failure
    ErrorResponse:
      type: object
      properties:
        message:
          type: object
          properties:
            header:
              type: object
              properties:
                status_code:
                  type: integer
                  description: HTTP status code
                execute_time:
                  type: number
                  description: Server-side execution time in seconds
            body:
              type: object
              properties:
                error:
                  type: object
                  properties:
                    code:
                      oneOf:
                        - type: string
                        - type: number
                      description: Application-level error code
                    namespace:
                      type: string
                      description: Application-level error namespace
                    extraData:
                      description: Additional error context
  responses:
    BadRequest:
      description: Bad request — invalid or missing parameters
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
    Unauthorized:
      description: Unauthorized — missing or invalid API key
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
    NotFound:
      description: Not found
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
  securitySchemes:
    apiKey:
      type: apiKey
      name: apikey
      in: query

````

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