It's an interactive video where you play the piano by using the timeline. Brought to you by Instrumentube. Under their profile page they've also got an electric guitar, bass guitar, upright bass and shaker. You can start your own band on YouTube!

I can imagine a world in the not-too-distant future where all human activity will be carried out on YouTube. Stay with me on this one. We'll watch entertainment videos there, play music, video-games, use it to communicate, eat, breath, dance the horizontal tango. Everything.

It'll be like the Matrix except it'll be full of 14 year-old vloggers decrying their lot in life, and fat people who can't leave the house taking the Pizza Roll Challenge who taste of heart attacks and diabetes. I can't wait.

Death, it stalks us - according to the Toltec shamans - at every turn in our lives, every corner it's behind us, following us. We cannot avoid it, even when we try to escape from reality when we play video-games. As this gruesome yet awesome list of morbid scenes from PC games shows.

It has the exploding, fiery, twitching, detailed dying bodies of the creatures from Starcraft 2 - those developers must be some sick puppies. It also has the disturbingly enjoyable catastrophe of a roller coaster crashing into innocent men, women and children in RollerCoaster Tycoon 3 and the haunting sight of a field of slain Romans from Rome: Total War.

It's got plenty more as well, so go check it out for your morose afternoon death fix.