"A Sunken Feeling" is an orchestral piece from the Season 6 soundtrack. It is a variation on the piece that plays at the end of the season premiere's teaser, featuring several more instruments and blending with the main theme.
Jack, on the flash sideways Flight 815, struggles to remember whether he has met his neighbor. The view then shifts out the window and down into the ocean, where the remains of the Island are shown, now submerged beneath the Pacific Ocean. Underwater, the remains of the DHARMA Barracks are visible, and a DHARMA shark is seen swimming near Tawaret's four toed foot.
Full list of appearances
- We see the sunken, forgotten Island. ("LA X, Part 1")
- We see Widmore's submarine. ("Dr. Linus")
- Widmore's team's darts knock the Man in Black's recruits unconscious. ("The Package")
- Desmond tries to free Charlie from his sunken car. ("Happily Ever After")
The title of the piece comes from both Jack's peculiar feeling that he knows Desmond, and the fact that the flash sideways Island is sunken underwater.