By using the numbers on the keyboard (0-9) you can play the piano directly on Youtube. The active key will be highlighted in yellow on the screen.<br />It doesn't work on phones.<br /><br />Image: Wikipedia<br />Piano notes: University of Iowa Electronic Music Studios (<a href="http://theremin.music.uiowa.edu/MISpiano.html" target="_blank" rel="nofollow">http://theremin.music.uiowa.edu/MISpiano.html</a>)<br />-------------------------------- <br />www.saznajnovo.com<br />...<br /><a href="https://www.youtube.com/watch?v=BHBpRbgoe34" target="_blank" rel="nofollow">https://www.youtube.com/watch?v=BHBpRbgoe34</a>