Sweetener will serve as Grande's follow-up to her 2016 compilation Dangerous Woman.
Grande showed off her unbelievable impression (and singing) skills in this game, in which she transformed Drake's "God's Plan" into a flawless '90s diva hit (giving us major Christina Aguilera vibes), and Kendrick Lamar's "Humble" into Evanescence-esque goth-rock jam, which was by far the most impressive. The June 20 plan is yet to be confirmed.
Earlier in the episode, Grande surprised her fans while they sang one of her songs.
She explained the inspiration behind the album title and said, 'It's kind of about like bringing light to a situation, or to someone's life or to someone else that brings light to your life or sweetening the situation'.
She performed "No Tears Left To Cry" for the first time as well as a cover of "Sexual Healing" by Marvin Gaye, wowing the tens of thousands in the audience with her sudden arrival and stunning live vocals.
Fallon added, "Thank you, pal".
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Shortly after Ariana's Jimmy Fallon appearance, the hashtag #SweetenerisComing began trending and showed a mix of tweets ranging from pure, unbridled joy about the news to utter confusion about the album's name.
The singer told Jimmy Fallon that her album would be released after she did three "big things" on the 20ths. Look, Fallon may have proven he's competent at this game by giving us a Ska interpretation of Ed Sheeran's "Shape of You", but there's just no way he could compete with Grande going full Evanescence on a hardcore rap hit.
One person said: "I cried watching u, i missed u so much baby, i love love love you, thank you jimmy for having our girl on your show, hope she's back every week pls and thx".
Grande's new song "No Tears Left to Cry" served as her first release since the Manchester bombing a year ago.
At the time, she wrote: "We won't let hate win".