"Defying Gravity" from Glee Season 1, Episode 9, "Wheels" Share Tweet March 30, 2010 by Tatum Related: Glee, Music, Rachel Berry, Kurt Hummel, Season 1 Episode 9 Glee - Rachel & Kurt - Defying gravity from Sjumilakliv on Vimeo. It's the Kurt vs. Rachel diva-off. Who will hit the high note in this Wicked solo?