CSI: Crime Scene Investigation Soundtrack

Fundamental

Sasha

Played at the beginning of the episode where they are all at the foam party

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Closer

Nine Inch Nails - FIP, Vol. 3: La playlist qui rythme votre vie (La sélection musicale de FIP)

When Brass and Grissom are being led through Lady Heathers house you can hear it playing in the background

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Darkest Dreaming

David Sylvian - Dead Bees On a Cake

End of episode, as Catherine is crying and Grissom arrives at Lady Heather's house

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Before the dark

Cinema Recorded Music

When Sara Sidle and Brass are in Tray Buchman's room, on the Sphere Hotel, just after the bath party, at the beginning of the episode. [Found with Shazam]

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