Sonauto/Song Extender

song-extender

Song ExtenderLLMs.txt

Extend any song seamlessly with AI-powered voice cloning—lengthen tracks, add verses, and clone vocals in any style, all while preserving original tone and emotion, perfect for musicians and content creators.

API Playground API Documentation

API Endpoint URL

Base URL for all API requests to this endpoint.

https://modelslab.com/api/v7/voice/song-extender

API Authentication

Authentication requires a valid API key included in the request. Generate and manage your API keys from your developer dashboard. Include the key in the key parameter for all API requests.

Integration Examples

Production-ready code samples for API integration

{
  "init_audio": "https://assets.modelslab.com/generations/3b57f1c2-a63e-4285-90ea-5b8bad106217.ogg",
  "prompt": "Write another verse for my song",
  "model_id": "song-extender",
  "extend_duration": "45.0",
  "side": "right",
  "key": "YOUR_API_KEY"
}

SDKs

Official SDKs

Production-ready SDKs and client libraries for all major programming languages

JavaScript

Python

PHP

API Parameters

Technical specifications for API request parameters.

Field Name	Parameter	Technical Description
Audio	`init_audio`	init audio
Prompt	`prompt`	Prompt
Model	`model_id`	Model
extend duration	`extend_duration`	This must be between 0 and 85.0 seconds.
side	`side`	You can extend from the start or end of the song by setting the side to "left" or "right," respectively.