Logic Pro

Logic Pro screenshots

Create your own compositions in a visual way, and export them in MIDI format
Starry Synth
Logic Pro 4.0 : Starry Synth

Alternative downloads

YGS Virtual Piano
This is a handy and simple virtual piano for your computer.
AnalogX Virtual Piano
An entertaining program that allows you to play the virtual piano.
EtudiX Piano Tutor
Program to help you visually learn to play the piano.