If you're a musician and you have access to a camera, there's a decent chance you've uploaded some footage on YouTube of yourself twiddling away on a guitar or a piano improv piece.
YouTube user Kutiman has taken several videos of amateur musicians, including a singer, a trombonist, a blues guitarist and a cellist - really - and edited them together to make a single song that we can't get out of our heads.
Keep in mind, none of these musicians know one another and had no part, as far as we know, in shaping their music to fit the other's part. The editor simply blended and chopped the videos together to make them coherent.
And it's pretty great, to be honest. Have a listen!