Nocturne of Shadow

In Ocarina of Time, the Nocturne of Shadow is one of the warping songs Link learns as an adult. It is taught to him by Sheik in Kakariko Village after completing the Water Temple and receiving the Water Medallion from Princess Ruto. It allows Link to warp to the upper part of the Graveyard and is the only way to access the Shadow Temple. The Nocturne of Shadow is the only song actually required by Adult Link to reach a temple.

Etymology
A nocturne, derived from the French word nocturnal, is usually a musical composition that is inspired by, or evocative of, the night, which fits with the dark theme of the "Nocturne of Shadow." Strangely, however, the Nocturne of Shadow is indeed a prelude (being that it begins on low, sad notes and builds up to a triumphant note).