Trumpet plays incorrect pitch at crotchet = 150.

• Sep 19, 2021 - 03:49
Reported version
S4 - Minor
  1. File must have these 7 instruments:
    • Bb Trumpet x 3
    • Horn in F x 1
    • Trombone x 2
    • Tuba x 1
  2. Tempo must be crotchet = 150 (Bug only appears at this tempo as far as I have tested).
  3. Make sure that the notes match that of the file attached (Haven't tested this for different note placement).
  4. Play from beginning (bug only appears if all those semibreves are played).
  5. These notes can be placed anywhere in the file as long as they match the above conditions (as far as I have tested).
Attachment Size
Musescore_Broken_.mscz 52.3 KB


I suspect what you are hearing is just a fact of physics, having the same note played with the same sound at the same time is likely to caused phase artifacts as the identical waveforms interact. The workaround is to alter the playback so that they aren't so identical - changing tuning or velocity of one note, turning off playback for one note, etc.

I can't hear any discrepancy at 150 or at any other speed. Could be some phasing/beat in your sound card driver for Windows? Can you create a sound file at 150 and at a different speed so others can give an opinion as to whether there is a true pitch difference or just different harmonics giving rise to a different "flavour" of note?

OS: Ubuntu 21.04, Arch.: x86_64, MuseScore version (64-bit):, revision: 3224f34

When I play it at 150, about one time in three I hear a prominent overtone an octave above the notated pitch, or some other noticeable artifact that is most certainly the result of what i described above, but I can't guarantee that's what someone else hears on their system. I suspect the specific results depend on one's CPU and audio hardware, as well as perhaps system volume levels, soundfont choices, etc.