Harald “Sack” Ziegler is a pioneering German musician and composer known for his adventurous blend of experimental pop, brass improvisation, and electronic textures. Emerging from the Cologne scene in the 1980s, Ziegler has collaborated with notable artists including Mouse on Mars and Markus Schmickler, influencing generations of avant-garde and electronic musicians. His playful, genre-defying approach—marked by spontaneous trumpet lines, toy instruments, and inventive sound design—embodies a distinctly imaginative spirit that continues to inspire curiosity and innovation in contemporary music.