Jonathan Groff to return for 'Glee' finale | EW.com 

Lea Michele threw up while singing \'Let It Go\' on \'Glee\'

Groff was a recurring guest-star on the show throughout the first several seasons, playing Jesse St. James. His character transformed on the show as Jesse went from rival glee club, Vocal Adrenaline, lead vocalist to a legitimate love interest of Rachel. The two ended up parting ways as Rachel had different plans for her future.  

Michele and Groff have a long history of working together, as both starred as the leads in the Broadway production of 

, I would like to spend some time with Lea Michele because I love her and we go way back,” Groff said at the Costumer Designers Guild Awards of his potential return to the show. 

What tune might we be treated to courtesy of Groff’s appearance? Hopefully a duet similar to one of their first songs together on the show, Lionel Richie’s “Hello.” But Groff is thinking something a little more country.  

“My go-to is ‘Islands in the Stream,’ always,” Groff said. 

Groff isn’t the only star heading to McKinley High for the finale. Geraldo Rivera, Andrew Rannells, and all seasons of New Directions members are among the guest-stars.

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