Rodeo organizers said more than 73,000 people came out to see the artist behind hits like "Die a Happy Man" and "T-Shirt" perform in Houston.
Rhett took to Twitter afterwards to share how much the Bayou City blew his mind.
He also took time earlier in the day to send a special shoutout to Houston Texans defensive end J.J. Watt, who he called "his best friend now."
While it looks like there's no stopping Rhett, who picked up a slew of nominations and awards at recent American Music Awards, Grammys, and iHeart Music Awards, he's also busy with a project at home as well.
He and his wife announced in February they are expecting a baby girl, and are adopting a second child from Africa.
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