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

# Music Collab

> Align remote vocals and a shared backing track in OBS.

Music Collab combines remote vocals with a shared backing track on one authoritative song timeline. This keeps the performance aligned to the track rather than relying on two independent playback clocks.

## Use Music Collab when

* Two remote vocalists perform against one backing song.
* The host needs a combined output ready for an OBS scene.
* Both peers must start, stop, and restart from the same song position.
* The guest should join without an account.

<CardGroup cols={2}>
  <Card title="Host walkthrough" icon="music" href="/guides/music-host">
    Create the session, load the backing, and add managed outputs.
  </Card>

  <Card title="Guest walkthrough" icon="microphone-lines" href="/guides/music-guest">
    Join, send a vocal, receive the backing, and follow the host start.
  </Card>
</CardGroup>

## Managed OBS sources

Music Collab groups its plugin-owned sources under **vAudioLink Music Collab** so they remain one collapsible unit:

* **vAudioLink Output** — the combined mix intended for the stream.
* **vAudioLink Backing (monitor)** — the backing track intended for local monitoring.
* **vAudioLink Backing Video** — the muted visual or lyrics source.

Only sources marked as plugin-owned are managed or cleaned up by the dock.

<Warning>
  Do not add the monitor-only backing source to the program mix. Doing so can duplicate the backing track.
</Warning>

## Backing inputs

* Supported YouTube URLs can be prepared by the bundled local extraction path.
* Local backing files use Ogg Opus (`.opus` or `.ogg`) in the current workflow.
* Both peers must report the prepared backing ready before a scheduled start.

## Synchronization model

Music Collab aligns performers to the backing song's shared position. It does not claim to eliminate conversational network latency between two open microphones.

<Card title="Fix Music Collab" icon="stethoscope" href="/troubleshooting/music">
  Diagnose preparation, transfer, start, duplicate backing, and source ownership.
</Card>