Live Coding is a process by which electronic music live can be done. There are specific complex programs to do that like Super Collider, Max MSP o Pure Data. This video emerge of the necessity to do live coding without know any of these languages. In this video I transform the song Smells like Teen Spirit in its mp3 code, but without knowing what I am doing. I decide a pattern of substitution of letters, and this is what transform the song slowly.