Cory Monteith Death: Matthew Morrison Performs Song in Tribute

Matthew Morrison performs "What I Did for Love" in honor of deceased co-star

Cory Monteith's "Glee" co-star Matthew Morrison paid tribute to his fallen co-star on Sunday in a way that one would expect a "Glee" star to do so — through song.

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Morrison — who plays New Directions director William Schuester on the Fox hit — began his performance at Manhattan nightclub 54 Below on Sunday with an acknowledgement of Monteith's death, before changing his show's opening number and performing an a cappella version of the song "What I Did for Love" in honor of Monteith, the New York Times reports.

Also read: Cory Monteith Appreciation: First an Addict, Then a Gleeful Innocent

From the musical "A Chorus Line," "What I Did for Love" was featured in the second season of "Glee."

Referring to Monteith as a brother, Morrison (pictured) conceded that performing the show in the wake of Monteith's death was "awkward," but added, "You guys came to see a show, I came to perform a show, so that’s what we'll do. And we’ll do it in Cory’s honor."

See video: 20 of Cory Monteith's Greatest 'Glee' Performances

Monteith, who had struggled with substance abuse and entered rehab earlier this year, was found dead in his Vancouver hotel room on Saturday.

Morrison's show "Up Close and Personal With Matthew Morrison," during which he performs classic standards from Broadway musicals, opened Sunday at 54 Below and is scheduled to run through July 17.