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

# StabilityAudioToAudio - ComfyUI Built-in Node Documentation

> Complete documentation for the StabilityAudioToAudio node in ComfyUI. Learn its inputs, outputs, parameters and usage.

> This documentation was AI-generated. If you find any errors or have suggestions for improvement, please feel free to contribute! [Edit on GitHub](https://github.com/Comfy-Org/embedded-docs/blob/main/comfyui_embedded_docs/docs/StabilityAudioToAudio/en.md)

Transforms existing audio samples into new high-quality compositions using text instructions. This node takes an input audio file and modifies it based on your text prompt to create new audio content.

## Inputs

| Parameter  | Data Type | Required | Range              | Description                                                                                            |
| ---------- | --------- | -------- | ------------------ | ------------------------------------------------------------------------------------------------------ |
| `model`    | COMBO     | Yes      | "stable-audio-2.5" | The AI model to use for audio transformation                                                           |
| `prompt`   | STRING    | Yes      |                    | Text instructions describing how to transform the audio (default: empty, max length: 10000 characters) |
| `audio`    | AUDIO     | Yes      |                    | Audio must be between 6 and 190 seconds long                                                           |
| `duration` | INT       | No       | 1-190              | Controls the duration in seconds of the generated audio (default: 190)                                 |
| `seed`     | INT       | No       | 0-4294967294       | The random seed used for generation (default: 0)                                                       |
| `steps`    | INT       | No       | 4-8                | Controls the number of sampling steps (default: 8)                                                     |
| `strength` | FLOAT     | No       | 0.01-1.0           | Parameter controls how much influence the audio parameter has on the generated audio (default: 1.0)    |

**Note:** The input audio must be between 6 and 190 seconds in duration. The prompt text has a maximum length of 10,000 characters.

## Outputs

| Output Name | Data Type | Description                                                              |
| ----------- | --------- | ------------------------------------------------------------------------ |
| `audio`     | AUDIO     | The transformed audio generated based on the input audio and text prompt |

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**Source fingerprint (SHA-256):** `4d320c851a58b58d1a744ca64295fe0cf3002455944ea1c5484b0c2df3ecd4d5`