I identified key usability issues with the existing percussion note entry system in MuseScore: I.e. the inability to identify which instrument was being inputted until after it was clicked, and the lack of customisability.
My UX solution included adding instrument labels while providing options to toggle notehead previews and reorder the buttons in the percussion panel.
This necessitated a UI overhaul, which was challenging due to space limitations. Testing with localised instrument names was crucial to finding the optimal size for each element.