Virtual piano online is to practice playing piano on the internet. Music can be played by the piano as a file (files.mid) upload to try to play the same. Can determine the speed of play. The training.
Save the music you play as a file (files.mid) to play on your computer.
Another simple way. In practice playing the piano. Without a real piano.To practice playing the piano with a computer. For amateur musicians, amateur or a professional matter.