Lil Nas X is gonna write till he can’t no more.

The 21-year-old musician, best known for his phenomenally popular country-rap song “Old Town Road,” will publish a children’s book next year, Variety reports.

Lil Nas X announced his book on Twitter, writing, “i’m dropping the best kids book of all time soon!”

Publisher Random House Children’s Books calls the book, C Is for Country, “a celebration of song and the power inside us all.”

“Join superstar Lil Nas X—who boasts the longest-running #1 song in history—and Panini the pony on a joyous journey through the alphabet from sunup to sundown,” the publisher says on a webpage for the book. “Experience wide-open pastures, farm animals, guitar music, cowboy hats, and all things country in this debut picture book that’s perfect for music lovers learning their ABCs and for anyone who loves Nas’s signature genre-blending style.”

The book is illustrated by Theodore Taylor III, whose work has appeared in children’s books like When the Beat Was Born and Woke Baby.

On Twitter, the musician’s fans signaled their excitement about the book. One user tweeted, “im gonna have kids just so i can read them this.” And another admirer of the singer made a reference to a song from Lil Nas X’s forthcoming album, tweeting, “NO BITCH C IS FOR CALL ME BY YOUR NAME.”

C Is for Country is scheduled for publication on Jan. 5, 2021.

Michael Schaub is a Texas-based journalist and regular contributor to NPR.