stage design - live techs - media services - music agency: a better way to stage GretschHouse is a pool of freelancing designers and technicians, directors, producers and managers inside the entertainment and media industry. the core of GretschHouse is its crew: professionals with years of both national and international experience, pressure proof and sorely afflicted. and every one crazy enough to still love the job. expect GretschHouse to be a powerful partner for even the most demanding projects, providing fast, reliable and professional services.