Piano Visualizer - Bring your piano music to life with this application.
Piano Connect - Piano Connect is one of the most popular piano learning apps that helps you play piano on your smartphone anywhere at any time.
Visual Music Design - Visual Music Design offers an intuitive application that you can use to playback music with creative and amazing visualizations based on beats.
MIDI Visualizer - Small cross-platform MIDI visualizer written in C++/OpenGL
My Piano - My piano is an app that allows you to learn piano with a virtual on-screen keyboard.
MIDITrail - "MIDITrail" is a MIDI player which provides 3D visualization of MIDI datasets.