On Sunday, Oct. 11, Kacey Musgraves called Antonio Gámez-Cuéllar, 18, and his younger brothers Caleb, 14, and Joshua, 12, onto the stage at Dallas’s American Airlines Center, the biggest crowd they’ve ever played.

Months earlier, at Gruene Hall in New Braunfels, Musgraves had welcomed the brothers onstage and said, “This is Texas at its best. This is not performance, this is generational wealth,” according to Vogue.

The brothers come from a five-generation mariachi family in McAllen, Texas. Antonio and Caleb play in McAllen High’s Mariachi Oro.

In February, the family was detained at a scheduled immigration check-in. They were released on March 9, 13 days later.

After their release, Musgraves found them on Instagram and wrote: “Great so come on the road with me.”

She followed through. At Gruene Hall, the brothers opened her three sold-out shows from May 3 to 5, and she called them back onstage to sing “Tú, Sólo Tú” alongside her.

“I loved it,” Antonio said after the first night. “I felt all the emotions at the same time.”

The Dallas show was their first time doing it in an arena.