Glee returned this week with a focus on brothers and wheelchairs.
Next Tuesday, meanwhile, the Fox comedy takes us back to 1977, paying homage to the 1977 John Travolta film Saturday Night Fever via an episode that can only be titled "Saturday Night Glee-ver."
Go behind the scenes with the Glee cast in the following video, as get a glimpse of Amber Riley singing “Disco Inferno” and as we also listen to Jenna Ushkowitz attempting to understand that era’s unusual dance crazes.
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