Tutorial/Trailer : Youtube

Documentation Link

Build a MIDI-driven piano visualizer in Unreal Engine using high-performance UMG widgets and Blueprint-friendly systems.

Piano Visualizer: Classic Template gives you a clean 2D falling-note piano visualizer that can be customized directly in UMG and Blueprints. It is built on top of UMG Musical Grids and MIDI Engine, combining musical timeline layout, MIDI playback, MIDI note events, piano-key visuals, and playhead-driven scrolling into one ready-to-use template.

This plugin requires the following engine plugins to be enabled:
Metasounds, OSC, MIDIDevice...