Robb Stewart Brass Instruments is a platform showcasing the work and interests of Robb Stewart, who has over 45 years of experience in the brass instrument industry. The website features galleries including a Museum with historical instruments, Projects showcasing Stewart's work, and a list of important brass instrument makers in 'History of Makers'. Stewart focuses on restoration and preservation of brass instruments, along with building unique instruments for customers. The site also includes educational content on instrument mechanics and maintenance, emphasizing the importance of proper care for longevity. While largely retired, Stewart remains interested in buying quality used brass instruments and providing insights to instrument owners.