Consisting of strings that vary in length and tension, a piano is an instrument that creates sound from the striking of keys which in turn cause a hammer to strike the strings and thus create different sounds and notes. Piano musicians play both individually and in combination with a band or orchestra. Whether you want to learn how to play, purchase or are just trying to learn more about the instrument itself the following list contains sites that should be able to help you out. If you know of any relevant piano websites that are missing please add them at the bottom left.