Camila Cabello's "Havana" was a little less picturesque getaway and a little more finger paint on Wednesday's (January 17) episode of The Tonight Show Starring Jimmy Fallon

"Havana," the lead single from Cabello's self-titled debut album, became its very own nursery rhyme in Fallon's fan-favorite "Classroom Instrument" segment, and the set — which featured The Roots and Fallon, himself, as backup performers — included melodica, xylophone, kazoo, ukulele, and lemon shaker. Your favorite nursery rhymes could never!

Cabello's self-titled debut album, which dropped earlier this month, drew critical acclaim and immediate adoration from fans, who said it was nice to see the 5H export stand on her own two feet.

"Leaving fifth harmony was the best decision camila has ever made for herself. she’s an amazing solo artist. don’t hate on me but this is my opinion. i’m so proud of her and this album is literally everything! she has my heart," one follower tweeted. Another noted: "I think what makes Camila such a poetic genius is that she makes every girl feel like THAT girl in her lyrics. Everything is relatable. 

Cabello told Zane Lowe in an interview for Apple Music's Beats 1 that the night before her album came out, a member of her hotel's housekeeping came in and scared the daylights out of her, leading her to believe she'd never see the LP's release.

"I was trying to go to sleep and this lady came in, and she scared the bejeezus out of me," she recalled. "I was like about to go to sleep, and I thought that I was having a nightmare. She was like, 'Hello?' I was so scared. I was like, 'This is it. This is it. This is my last day and I didn't even get to see my album come out.'"

13 Things You Didn't Know About Camila Cabello: