Ariana Sings Whitney, Adam Lambert Does George Michael on ABC's Greatest Hits

Summer 2016's greatest secret has been ABC's Greatest Hits, wherein pop stars from yesterqueer and togay team up to perform, you guessed, their greatest hits. They've had the Backstreet Boys teaming up with Meghan Trainor for "I Want It That Way," Bonnie Raitt and Audra Day doing "Love Sneakin' Up on You," as well as a number of artists you haven't heard from or seen in many years and many tax audits.

For the season finale, Greatest Hits brought out the big guns, namely, petite ponytailed powerhouse Ariana Grande. Ari belted out two Whitney Houston classics, the sorely underrated "Queen of the Night" and everyone's favorite ode to unrequited love, "How Will I Know."

Ari even brought out the crimped hair while serving subtle Thierry Mugler (this) realness with a silver lame thigh-high boot I'm not mad at, proving, once again, that she has the range. But lest we forget, Whitney was the range.

Ariana certainly never forgot, tweeting out that she was "honored" to be honoring her "angel," and I'd like to think Whitney would approve. Especially since she didn't resort to any hologram shenanigans.

From one "Queen of the Night" to another, Adam Lambert paid homage to George Michael with "Faith":

And just for kicks, here's John Legend reminding us that Lauryn Hill used to be awesome:

You can check out more videos from ABC's Greatest Hitshere.