Doja Cat joined Jimmy Fallon behind the desk at The Tonight Show last night as co-host. The singer took part in several segments of the late-night show, including the opening monologue and a round of “Song Scramble” alongside Fallon.

Taylor Swift will return to “The Tonight Show Starring Jimmy Fallon” on Oct. 6, just days after the planned release of her 12th studio album, “The Life of a Showgirl,” which is set to debut on Oct. 3.