---
description: The JJazzLab built-in synth.
---

# Using FluidSynth

It's a **ready-to-use** synth **optimally configured** for JJazzLab. FluidSynth should be enabled by default when you first launch JJazzLab.

{% hint style="danger" %}
If FluidSynth appears disabled, it means that a problem occured while trying to load FluidSynth. Check the [installation instructions](../installation).
{% endhint %}

<figure><img src="https://1057949908-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MQE7B7yjVY3xzlsorS4-887967055%2Fuploads%2FXdszeJ0HWlnbaKo5pXDA%2F2023-12-31%2018_22_57-Options.png?alt=media&#x26;token=490e6be1-72ab-49f1-823b-eb8d9f4866a6" alt=""><figcaption></figcaption></figure>

You can adjust FlulidSynth settings and its default instruments.

<figure><img src="https://1057949908-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MQE7B7yjVY3xzlsorS4-887967055%2Fuploads%2FgVwUj884aWxSpFuAUUe3%2F2023-12-31%2018_23_29-FluidSynth%20settings.png?alt=media&#x26;token=7b388976-3fb9-426d-9366-d00ff948ea5e" alt=""><figcaption></figcaption></figure>

FluidSynth is an open-source project: [https://www.fluidsynth.org](https://www.fluidsynth.org/).
