There are also recurring timbral choices in the scores: In "Rock and Pool", Shore uses the sound of the Cimbalom, on its own, to evoke Gollum's thematic material without quoting it. Bowed cymbals are often used to create a sense of unease in the quest's darker passages such as the journey's in the dark, the Dead Marshes and the shadow World. Aleatoric devices are used similarly, as well. There are also distinct timbral variations on themes: The Shire theme also has a more spy variation for tin whistle, and even when it is played on a clarinet it is usually done to evoke Bilbo. Even lyrics are used narratively: before the seduction of the ring theme can appear, Shore introduces the associated lyric with a rising male choir, without the melody, to portray Isildur's seduction by the ring. When Frodo and Sam approach Minas Morgul, the choir sings syllables from "The Revelation of the Ringwraiths", associated with the ringwraith theme, without quoting the theme, per se.