Brass instrument restoration involves repairing and refurbishing instruments made of brass, such as trumpets, trombones, and saxophones. This process typically includes cleaning, dent removal, and replacing worn parts to restore the instrument's sound quality and appearance. Restoration can also involve polishing the brass to remove tarnish and applying protective coatings to prevent future damage. Skilled technicians use specialized tools and techniques to ensure that the instrument not only looks good but also plays well, preserving its value and extending its lifespan for musicians and collectors alike.