Ariana Grande sings her heart out while performing a medley of Whitney Houston‘s hits for the live finale of ABC’s Greatest Hits on Thursday (August 4).

The 23-year-old singer kicked off the night with her performances of “How Will I Know” and “Queen of the Night.” Watch the video below!

“thank you so much @greatesthitsabc 😌 honored & grateful to have been a part. #howwilliknow #queenofthenight,” Ariana wrote on Instagram after her performance aired.

“when I wake….. from dreaming…. tell me is it really love ♡,” she captioned another photo, using the lyrics from “How Will I Know.”