Symbolic music research plays a crucial role in musicrelated machine learning, but MIDI data can be complex 2. SOFTWARE OVERVIEW for those without musical expertise. To address this issue, 2.1 Key functionality we present MidiTok Visualizer, a web application designed to facilitate the exploration and visualization of various MidiTok Visualizer is a web application designed for visualizing MIDI tokenization methods from the MidiTok Python and analyzing MIDI file tokenization techniques package. MidiTok Visualizer offers numerous customizable from the MidiTok Python package. The key capabilities parameters, enabling users to upload MIDI files to visualize of the tool are as follows: tokenized data alongside an interactive piano roll. Allows users to upload a MIDI file and view a graphical representation of the tokens generated by 1. INTRODUCTION