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

# Stems

> Split any song into vocals, instrumentals, drums, bass, and more — eight stem-separation engines in one tool.

<Card title="Stem Separation" icon="arrows-split-up-and-left" href="https://vocuno.com/app?tool=stem-separation">
  Click here to try! ↗️
</Card>

**Stems** extracts the individual components of a track. Have a song with vocals and want just the instrumental? An a cappella of the vocal? The isolated bassline? This tool pulls out exactly the stem you need.

Upload your audio (MP3, WAV, FLAC, OGG, M4A) or pick a track from your library. By default the tool splits **vocals + instrumental**.

## Custom stems

Switch to custom mode to extract specific parts:

* Drums, Bass
* Guitar (acoustic or electric)
* Piano / Keys
* Strings, Woodwinds
* Backing Vocals

## Models available

You can choose between several separation engines — each with its own character:

* **Vocuno** — the in-house advanced splitter (30 credits, or 60 for the full multi-stem set)
* **LALAL.ai** — best general-purpose option with the widest custom-stem support (20 credits/minute)
* **Moises**, **BandLab Splitter**, **LANDR Stems** — alternative engines worth trying when a mix is stubborn
* **MusicGPT** (20 credits) and **Mureka** (50 credits) — quick vocal/instrumental splits
* **Suno** — only for tracks generated with a Suno model inside Vocuno (30 credits, 60 for advanced)

See [Credit Costs](/credit-costs) for the full pricing table.

## Frequently asked questions

<AccordionGroup>
  <Accordion title="Which model should I pick?">
    Start with Vocuno or LALAL.ai. If a particular mix separates poorly, try another engine — results genuinely differ per song.
  </Accordion>

  <Accordion title="What can I do with the stems?">
    Everything — remix them in the [Studio](/using-the-studio), run the vocal through [Voice Conversion](/create/voice-conversion-1), convert a melody with [Stem-to-MIDI](/create/studio-tools), or build a [Mashup](/create/mashup).
  </Accordion>

  <Accordion title="Can I split a copyrighted song?">
    The tool works on any audio, but what you do with the output matters — see [Copyright & Licensing](/faq/copyright-and-licensing).
  </Accordion>
</AccordionGroup>