If you do not have a MIDI enabled keyboard or other controller, you can use a virtual MIDI controller, allowing you to play with your qwerty computer keyboard!
Here are some examples that you can download:
Pablosoft Virtual Piano
If you haven't downloaded the software yet, you can download it here: http://www.acoustica.com/piani ssimo/download.htm
To complete the registration process, please run the stand-alone Pianissimo and click the "Help" menu, followed by "Enter Registration Code". (You may also click the...