Hellmut Hattler is a bass guitarist extraordinaire hailing from Germany. Jan has worked with Hellmut since his days as a design student. Through this time, karlssonwilker has worked on countless HATTLER album designs, as well as posters, tour collateral, and merchandise. Given the background and the two decade-long relationship, the process is based on trust, enjoyment, and friendship. Thank you, Hellmut.