Thousands of fans were already in Vaught Hemingway Stadium when they were informed the show was off.
“Last Night” leaps to No. 8, in between “Thought You Should Know” at No. 7 and “One Thing at a Time” at No. 9.
Baby No. 2 will join the couple's first child, Lucy, who was born in May 2022.
"Our number one priority is and always will be ensuring that our children are happy, healthy and loved," the country star wrote in a statement posted on Friday (April 21).
Hayes’ Duck Buck arena tour launched April 13, with openers including Breland and Ingrid Andress.
The moment was captured by a fan, who shared the video to TikTok.
She also cites the likes of Loretta Lynn, Dolly Parton and Tammy Wynette as forebears she learned from in her career.
Lainey Wilson, Ingrid Andres, Morgan Wade and Madeline Edwards joined her for the set and single recording.
"I don't have any obligation to anyone right now," Lambert tells Billboard.
The May 1 event is aimed at supporting educators and school staffers following the recent mass shooting in Nashville.
