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Episode 4.18 - "My Roommates"

Scene: J.D. puts the moves on Kylie.
"Faith in Angels" by Peter Mayer. Album: 'Musicbox' [Download @ site]

Scene: Kylie puts the moves on J.D. (background music).
Sounds like Keren DeBerg. Hopefully more info soon.

Scene: Cox takes a bold stand for his friend; J.D. exposes Turk & Carla's deeper problems.
"Windmills" by Toad The Wet Sprocket. Album: 'Dulcinea'