Mixer

    MuseScore 4 mixer hero image

    The Mixer allows you to change instrument sounds (including loading virtual instruments and effects), adjust volume and panning, and make other adjustments to the playback for each stave.

    A channel strip is automatically created for each stave in the score (this includes when a mid-score instrument change is applied to a stave). There is also a dedicated metronome channel strip and master fader.

    Users of previous versions of MuseScore should note that the concept of a “part track” with subsidiary “channel tracks” does not exist in MuseScore 4 due to compatibility issues with the new playback engine. It may be reintroduced in later versions.

    Opening the mixer

    You can display/hide the mixer by:

    • Clicking on the Mixer button in the Note input toolbar
    • Clicking ViewMixer
    • Using the shortcut F10

    Mixer controls

    Each channel strip contains the following controls (described from the bottom of a channel strip upwards):

    Mixer channel strip

    • Mute (M) button: Disables the playback volume (Muted staves will not be heard)
    • Solo (S) button: Enables playback volume for the selected (soloed) stave and mutes all other staves (Where only one stave is soloed, disengaging the solo mode will automatically unmute all other staves)

    Mute and solo controls can be used in combination to change which instruments are heard during playback. For example, it is possible to put multiple staves into solo mode, so that only those staves are heard. It is also possible to mute a soloed stave.

    • Volume fader: This can be clicked and dragged to increase or decrease the playback volume. Double clicking on the volume fader will return it to a neutral level (0 dB gain).
    • Pan knob: This can be clicked and dragged to send the audio signal to the left or right speakers. Double clicking on the pan knob will return the pan to center position.

    Audio FX and sounds

    MuseScore 4 supports virtual instrument effects plugins (VSTs). If you have VSTs installed on your computer, they will automatically appear in the Sound and Audio FX drop-downs in the mixer.

    To load a VST plugin

    1. Hover over a plugin slot
    2. Click the dropdown button that appears
    3. Locate and click on a plugin from the dropdown menu

    The plugin will load as a separate window above your score. When you load an audio FX plugin, a new slot appears in the track

    Loading a VST into the mixer (animated image)

    To disable a VST plugin

    1. Hover over a plugin slot
    2. Click on the power icon that appears

    This deactivates the plugin without removing it from the mixer.

    Disabling a VST (animated image)

    To remove a VST Audio FX plugin

    1. Hover over a plugin slot
    2. Click the dropdown button that appears
    3. Click No effect

    This removes the effects plugin from the mixer.

    Removing a VST (animated image)

    To replace a sound plugin

    Only one sound plugin (virtual instrument) can be loaded for each track, and there must always be a sound assigned to each track (I.e. a track cannot contain no instrument sound). You can replace a sound using the process described above and selecting a different plugin or the default MuseScore General HQ SoundFont.