Glee's highly anticipated tribute to the late Whitney Houston airs Tuesday, and based on the preview below, it is sure to be an emotional episode.

In the clip, Rachel (Lea Michele) and Mercedes (Amber Riley) are joined by Santana (Naya Rivera)  and Kurt (Chris Colfer) in an acoustic rendition of Houston's 1985 hit "How Will I Know."

Check out the performance clip below. What do you think?


Glee airs on Tuesdays at 8/7c on Fox.