"Departing Sun" is an orchestral piece on the Season One soundtrack. It serves as an early theme for Sun. The Asian-flavored theme plays extensively in "House of the Rising Sun", sometimes sounding beautiful but other times becoming dangerous as Sun is disturbed by Jin's violent behavior.
Jack talks to an Oceanic clerk about getting his father's coffin aboard, and Jin stands right behind him, annoyed at the delay in the line. Sun, standing a distance away, checks the clock and sees that if she's going to abandon Jin, the time to leave has come.
Tears streaming down her face freely, she begins to walk away, fully aware that this decision will be permanent. She gives her husband a last look - he holds out a flower for her, as he did at a party at her father's house so long ago. Sun, moved, walks back to him, deciding not to leave. When he asks why she is crying, she responds that the flower is "too beautiful".
Full list of appearances
The theme from "Departing Sun" plays during the following scenes:
- Sun watches Jack and Kate flirt. ("House of the Rising Sun")
- Sun tends to some flowers, while Jin kills a fish he has caught. ("House of the Rising Sun")
- Sun looks at handcuffed Jin. In a flashback, Jin announces Mr. Paik has approved of their marriage. ("House of the Rising Sun")
- Jin comes home with blood on his hands. ("House of the Rising Sun")
- Sun and a friend go over her escape plan. ("House of the Rising Sun")
- Sun approaches Michael and reveals her knowledge of English. ("House of the Rising Sun")
- Sun prepares to leave Jin but changes her mind. ("House of the Rising Sun")
- Jin talks to his father. ("...In Translation")
- Jin leaves Sun. ("...In Translation")
- A man in the airport bathroom warns Jin against fleeing. ("Exodus, Part 2")
- Sun's fertility doctor tells her Jin is infertile. ("The Whole Truth")
The phrase "departing sun" is a metaphor for "sunset". In the context of this scenario, however, it takes a more literal connotation, with a woman, named "Sun", planning on leaving her husband, and departing her married lifestyle.