Fic Search: Kurt and Rachel Duet

[gbaudier.livejournal.com]

Hey. First time poster, hope I got the tagging right! I'm looking for a Fic where Kurt and Rachel are singing the duet "Loathing" from Wicked together. They are in the glee/music room and Kurt changes the orginal wording of the song from "blonde" to "a soprano" and Rachel gasps. I believe it was part of a bigger Fic, but I can only remember that one scene. Somebody please help!