This story first appeared on Time.com.
As McKinley High's Gleeks bid farewell to television this Friday with the series finale, it'll be interesting to see if long-lost fans will tune in. The musical dramedy hit a ratings low during its fifth season finale with just 1.9 million viewers.
This latest cover is perhaps a throwback to the first season, when Michele and Colfer sang a duet of Wicked’s "Defying Gravity." Both stars of Wicked's original Broadway cast, Idina Menzel and Kristen Chenoweth, have guest starred on the show.