Spoilers del capítulo 2x17

Antes que nada, quiero aclarar que muchos de estos spoilers son sólo especulaciones.

According to Chord Overstreet (Sam), this episode involves 'the funniest song of all time'.
Chord Overstreet filmed a scene and then went to record a song.
Jessalyn Gilsig (Terri) was on set filming scenes.
Stephen Tobolowsky (Sandy) confirmed that he's back on Glee.
Holly Holiday is back, this is her third appearance.
Amber Riley (Mercedes) tweeted that she has recorded a song. She also said she is filming a "very big scene".
Jennifer Lopez has confirmed that she will be guest starring sometime soon. But her role has yet to be written. Its assumed she may either be Santana's mother or a judge for Nationals.
Adam Anders confirmed that Lea would perform 'How' by Lisa Loeb.
Various SYTYCD members that were part of Aural Intensity have been tweeting about filming a Glee scene with a song. With work on Original Song completed, its assumed the students transferred to Carmel High and Vocal Adrenaline as part of Sue's plot.
Holly Holiday dumps Will and starts dating Dustin, the Vocal Adrenaline Coach. (Esto fue desmentido por Ausiello)
Santana gets slushied by Karofsky.


Songs
A song by Sam Evans.

"One Night in Bangkok" from Murray Head. Sung by Legion of Doom (rumor, algunos dicen que sólo la cantará Sandy)


"How" by Lisa Loeb. Sung by Rachel.


"All by Myself" by Celine Dion. Sung by Sunshine Corazon with Vocal Adrenaline.


"Bubble Toes" by Jack Johnson. Sung by Quinn (rumor, ya que se había comentado que Dianna estaba enferma, y que estaban haciendo lo posible para curar su voz) and danced by Mike Chang.


"Ain't No Way" by Aretha Franklin. Sung by Mercedes Jones.


"I Follow Rivers" by Lykke Li. Sung by Tina Cohen-Chang.