A percussion instrument is pretty much anything that can be hit, tapped, scraped, scratched or banged. In an orchestra it is generally the responsibility of the individual or small group of people up the back… the ones who get to make the most noise and have to master the most instruments and who, in this episode, help give us armies fighting on an ice covered lake, a peasant girl dancing herself to death, big gates, small rocks and a visit to The Overlook Hotel… with works from the composers Prokofiev, Sculthorpe, Bartok, Stravinsky and Mussorgsky.