 "The Idea of North" ends with the last movement of Karajan's recording of Sibelius' Symphony no.5 in E flat major, the only use of a complete movement from the classical repertoire in the trilogy.Just like the Sibelius symphony ending "The Idea of North", "The Quiet in the Land" can also be said to be in the key of E-flat major, as it uses and sometimes superimposes various pieces in that key