Hans Tammen's music performance has been called "a killer tour de force of post-everything guitar damage". I asked him why, and the response is a summary of why I like Hans: clever, honest, and engaging at intellectual as well as practical level. The interview covers Hans work, the concepts behind his experimentation with science data and difference music genres, his own "hybrid" profile of musician-programmer, with a special treat: three music excerpts from his published compositions.