‘Glee’s’ Amber Riley Performs Whitney Houston’s ‘I Will Always Love You’ (Video)

The performance of Houston's signature tune had been planned before the singer's Feb. 11 death

"Glee" star Amber Riley added another fine cover of the Whitney Houston/Dolly Parton hit "I Will Always Love You" to the mix on Tuesday's Valentine's Day-themed episode of the Fox dramedy, which was dedicated to Houston.

Riley, as "Glee" diva Mercedes, belted out a powerful version of the tearjerker ballad, as Mercedes made the decision to be single instead of dating current boyfriend Shane or ex-boyfriend Sam.

Also read: Whitney Houston's Death Could Earn Dolly Parton a Bundle

The song, Houston's signature tune from the 1992 soundtrack for "The Bodyguard," was featured in "Heart," the episode that ended with a title card that read, "Whitney Houston 1963-2012. We will always love you."

Watch Riley's performance below: