Fly to the Sky's Hwanhee and Gummy showed perfect harmony on the July 5th summer special of 'Immortal Song 2'.

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The two veteran singers covered Tour Sketch's "Star is Fading", and Gummy's husky voice as well as Hwanhee's powerful, low vocals were an excellent match. Despite the fact that Fly to the Sky is already an established duet group, Hwanhee and Gummy could've been a unit themselves.

Their performance gave the audience goosebumps, but it was�JK Kim Dong Wook�and MC Sniper�who took the final win.