Vocal exercises are part of an actor’s working life. In ancient Greek times, it was the greatest orators, those with the physical gift of a beautiful voice and a strong diaphragm, that were the actors and public speakers. There are references in some Shakespeare's plays to the vocal exercising of an actor before performance and the importance of enunciation and volume. There are many types of vocal exercises, and each addresses a different part of the vocal mechanism. You can look at each component as a cog in a machine that, when put together, will aid understandable and natural sounding speech that can easily be heard at the back of an auditorium. In this collection Jeanette Nelson, Head of Voice, takes actors through a warm up and a series of exercises typical for actors in rehearsal at the National Theatre.