It's a program that will allow you to make the most of the QWERTY keyboard as if it were a MIDI controller. The application will allow you to chose any instruments from your sound card's sound databank, that usually include from classic pianos and electronic keyboards to ethnic percussion instruments.
This tool also includes a sequencer that will allow you to record everything that you play on different tracks, something that can come in very handy for those people that work on music compositions and need a program to quickly reflect their ideas.
The interface may be somewhat sober compared to other music composition applications, but that doesn't mean it's less powerful.
Download KB Piano and prove your music skills with your PC's keyboard.