This app is a MIDI File Player with custom SoundFont file.
You can play Standard MIDI File with your browser. Even if you do not own any external MIDI Device.
You can also import your own SoundFont (sf2) files and test them with MIDI files.
Just open MIDI, SoundFont files from your Google Drive and your computer, and Play it in your browser. It's very easy to use. You can control your playback like Play, Stop, Seek, Volume and all common controls in any audio player.
Supported formats: mid, midi, sf2...