I utilized JavaScript to render music notation from pppp to ffff iirc that can connect to a MIDI keyboard, allowing users to practice along with the interactive notes. Initially, I experimented with Adobe Flex before transitioning to web-based solutions and yes, it can read and play any MIDI files to my SF2 soundfont.

The only problem is that MuseScore community took years to fix a missing measurement in MusicXML structure, I had to patch the code on my own.