After Lauryn Hill canceled her performance at the Grammys on Monday, we finally got a glimpse of the duet that could have been when the vocalist joined The Weeknd during a performance of his hit single "In the Night" on The Tonight Show Starring Jimmy Fallon on Friday. Of course, her appearance was a surprise as The Weeknd introduced her halfway into his set, but it was well worth the wait. Talk about a match made in musical heaven! Later that night, The Weeknd took to Twitter and wrote, "Most important experience of my life. thank you Ms. Hill." Watch the entire performance above now, and then relive The Weeknd's sultry Grammys performance.