MuseScore 4 notes decay before I let go of Midi Keyboard

• Oct 23, 2022 - 21:33

In Muse Score 4, any time I try to hold out a note or chord when holding down notes on my MIDI keyboard, the notes decay relatively quickly (about 1 second) before I've actually let go of the keys. In fact, it doesn't matter how long or short I strike the keys, the note duration is the same. For example, if I strike the keys with a staccato articulation, the note still plays for about a second before decaying.

This is frustrating when trying to experiment with melodic ideas that require longer note durations before committing them to the score. I compose jazz pieces, and this audio issue renders any swung eigth note ideas that I play into an incomprehensible off-time mess.

Changing the rhythmic note value selection for "note input" has no effect on this issue, as I don't have "Insert" selected when playing through melodic ideas with my MIDI keyboard (or else they would get committed to the score).

After I've committed my melodic ideas to the score via "Insert", note values playback correctly for their intended durations, which included whole notes and ties.

I could, of course, 1) go back to v.3.6 or 2) experiment with compositional ideas on another keyboard or in another software, but I often use VSTs such as Kontakt to inspire melodic compositional ideas and capture them to score immediately as part of my process.

I've included a lead sheet I'm working through in Mv4 as an example. You won't be able to open it properly in Mv3.

Is there a setting I need to change, or is this a known issue with the development versions of Musescore 4?

Attachment Size
New_Idea__10-18.mscz 481.77 KB


MuseScore isn't designed for real-time playback. Better to use the built-in sounds on the keyboard or a separate app, for that.

The setting for how long notes sustain during note input is given in Edit / Preferences / Note Input.

In reply to by Marc Sabatella

Thanks for the quick response, Marc.
I understand that MuseScore isn't designed for real-time playback, but I don't experience this issue in the current MuseScore 3.X. When I strike a keyboard key in M3, the audio plays for as long or short as I hold the key down until the note decays naturally. This allows me to play any articulation and dynamic. In version 4, it doesn't matter how long, short, hard, or soft I press my MIDI keyboard, the sound engine plays the note for the length of time set in Edit / Preferences / Note Input, and the velocity of my key strike has no effect on the dynamic of the note that plays back.

Is there something different in the sound engine or playback of M4?

In reply to by Glennallen81

Yes, it's entirely new, that's kind of the main point of MuseScore 4.

But - are you sure it's MuseScore 3 playing the sound when you hold notes long? I don't have a MIDI keyboard attached currently, but I never found it to work that way in the past - notes played only a fixed length of time, and with a fixed velocity, and with no sustain pedal support, in previous versions of MuseScore 3. Maybe some improvement was made more recently than I ever tested.

Notes not only have the same duration, but also the same velocity. That's really disappointing, also considering that it worked well in the previous versions.

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