Fans of Fox's Glee can now listen to the final duet between Kurt (Chris Colfer) and Blaine (Darren Criss) ahead of the series finale this Friday.

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Kurt and Blaine will be singing the classic song Daydream Believer by The Monkees during the two-hour series finale of Glee. It will be their last of many duets and fans can now listen to it ahead of the episode here.

The show is going back in time for the first hour in an episode called 2009. This is when Rachel (Lea Michele), Kurt, Tina (Jenna Ushkowitz), Mercedes (Amber Riley), Artie (Kevin McHale) and the late Finn (Cory Monteith) first auditioned for the glee club as high schoolers. Songs performed in the episode include Popular from Wicked (which Kurt and Rachel sing), I'm His Child by Zella Jackson Price (Mercedes with the Church Choir), I Kissed a Girl by Katy Perry (Tina), Pony by Ginuwine (Artie) and Don't Stop Believin' by Journey (whole cast).

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Then in the final episode, titled Dreams Come True, the following songs will be sung: Daydream Believer, Teach Your Children by Crosby, Stills, Nash & Young (Will Schuester), Someday We'll Be Together by Diana Ross & the Supremes (Mercedes), The Winner Takes It All by ABBA (Will and Sue Sylvester), This Time written by Darren Criss (Rachel) and I Lived by OneRepublic (whole cast).

The two-hour Glee series finale airs Friday at 8 p.m. ET/PT on Fox.

Watch the promo for the final episodes of Glee here:

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