Looking back, 2021 was the peak of the OMR struggle. By late 2022 and 2023, AI models (like those found in or Soundslice ) started getting scary good. Suddenly, PDFs turned into MSCZ files with 95% accuracy.
In 2021, professional users often turned to dedicated OMR software for higher accuracy, as the free online converter sometimes struggled with complex layouts or handwritten scores. Import a pdf or scan music - MuseScore convert pdf to mscz file 2021