The Roland SRX-11 Complete Piano is a sound expansion board for Roland Synthesizers. It was released in 1991 and is a collection of high-quality piano sounds, including grand pianos, electric pianos, and harpsichords. It also includes a variety of other instrument sounds, such as strings, brass, and percussion. The SRX-11 was designed to provide a wide range of realistic piano sounds for use in any musical situation.