A "concert grand" is a type of piano that is specifically designed for professional performances. It is the largest and most powerful type of grand piano, typically measuring between 7 to 9 feet in length. The size allows for a richer sound and greater dynamic range, making it ideal for concert halls and large venues. Concert grands are often favored by classical pianists and are used in orchestras and solo performances. They feature a complex action mechanism and high-quality materials, which contribute to their exceptional sound quality and responsiveness. Many renowned brands, such as Steinway & Sons and Yamaha, produce concert grand pianos.