I have a great love for useless web sites, and this one might rank up there as one of the most fun useless ones out there, (sorry InstantRimshot.com).  KissTunes.com lets you become a grand piano, acoustic guitar or electric piano player right from the comfort of your own keyboard. 

The interface here is pretty simple.  You can use your keyboard or the mouse to click the buttons, and play that specific note.  You also can record your little ditty once your done, play it back, save it or load another.  Who wouldn’t want to play and record tunes online using your computer’s keyboard? 

Although it is a little slow right now (probably going to be getting really popular soon) be sure to keep KissTunes.com handy next time you feel like composing your next keyboard tune of your own.