---
name: "muse4"
section: "1"
platform: "linux"
package: "muse"
version: "4.3.0-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/muse4"
---

# muse4(1)

MIDI/Audio Sequencer

## NAME

MusE - MIDI/Audio Sequencer

## SYNOPSIS

**muse4** \[ *options* \] \[ *file* \]

## DESCRIPTION

**MusE** is a MIDI/Audio sequencer that can also record and edit sound files, apply effects and filters from an intuitive graphical interface.  It is based on the Linux-specific ALSA interface for audio i/o.  The Jack Audio Connection Kit is used for routing.  LADSPA-compliant plugins allow to extend the list of available effects.

The optional *file* argument denotes a project file in MusE-internal format that is loaded on startup.  Project files can also be loaded later on through the graphical menu.

## OPTIONS

- **-a**

  Use a dummy audio backend instead of real audio i/o.

- **-d**

  Start in debugging mode without real-time threads.

- **-D**

  Enable verbose debugging messages.

- **-h**

  Display usage information.

- **-I**

  Do not attempt to load any DSSI plugins.

- **-l *xx***

  Force locale to the language/country code xx.

- **-L**

  Do not se LASH.

- **-m**

  Provide debugging messages about midi input events.

- **-M**

  Provide debugging messages about midi output events.

- **-p**

  Do not attempt to load any LADSPA plugins.

- **-P *n***

  Set scheduling priority of real-time threads to *n* (Dummy only, default 40. Else fixed by Jack.).

- **-s**

  Provide debugging messages about sync events.

- **-v**

  Print version information.

- **-V**

  Do not attempt to load any VST plugins.

- **-y**

  Enable Python control support.

- **-Y *n***

  Force midi real time priority to n.

## SEE ALSO

**MusE** provides an integrated help system in the graphical user interface.

## AUTHORS

**MusE** was written by Werner Schweer, Robert Jonnson, Mathias Lundgren, Frank Neumann, Joachim Schiele, Tim Donnelly, Nil Geisweiller,  Orcan Ogetbil and others.

This manual page was originally written by Daniel Kobras  \<kobras@debian.org\> for the Debian GNU/Linux system (but may be used by others). It was updated later by Orcan Ogetbil for MusE2.