A concert piano, often referred to as a grand piano, is a large, acoustic musical instrument designed for professional performances. It features a horizontal soundboard and strings, allowing for a rich and resonant sound. Concert pianos are typically used in concert halls and are favored by musicians for their dynamic range and expressive capabilities. These pianos come in various sizes, with the concert grand being the largest, measuring about 9 feet in length. Renowned brands like Steinway & Sons and Yamaha are known for producing high-quality concert pianos, which are often played by famous pianists such as Lang Lang and Martha Argerich.