Cannot Play Scores in Musescore PC App

The first time I created a score everything worked fine, but when I went to create a score the second time I couldn't play what I had done. The whole playback…

MuseScore 4.0 - Download for PC Free

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Composition won't play back

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Basics

I can't enter any notes

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PLAYBACK PROBLEM

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Wrong note on playback

MuseScore - Create, play and print beautiful sheet music