Grupo Frontera proudly and frequently calls itself “puro 956” — the area code for the Rio Grande Valley and surrounding areas. But Houston and its people are deeply woven into the group’s story.

Over the last three years, the band has sold out four Houston-area shows, including last year’s Go Tejano Day at RodeoHouston. They’ve also made surprise appearances at Bad Bunny and Grupo Firme concerts. Thursday night’s return to Toyota Center was another sellout, and the arena felt packed to capacity even by venue standards. Long merch lines crowded the main concourse. An equal balance of men and women, many in cowboy hats, danced in their seats and sang along with every lyric.

Frontera’s first sold-out show was in 2022 at El Rodeo Disco in Edgebrook Plaza, which closed last year. Singer Adelaido “Payo” Solís III was so nervous he had a panic attack. He also recalled playing a private Houston party they’d been booked for months in advance, just as “Un X100to,” their record-breaking collab with Bad Bunny, was becoming a global hit.

Houston was pivotal in “opening the doors” to bigger venues and opportunities. And after several years of upward trajectory, they’re now established stars in regional Mexican music. The set design is bigger and bolder. There were striking red visuals and continuous pyro. The clothes are sleeker. Solis has replaced the baggy T-shirts and jeans with form-fitting tops and leather pants.

The group’s sound is rooted in traditional Tejano and norteño music. But they experiment with other genres, too, especially onstage. Opener “La del Proceso” morphed effortlessly into an electro-merengue bounce. “Por Qué Será” kicked off with a reggae groove. “ALV” balanced a steady shuffle with reggaeton. “No Se Va,” the group’s breakthrough hit, was reworked with an extended pop intro.

To be sure, most of the two-hour set was puro baile vibes. In Mexican culture, a baile is a large party, usually with live music that couples can dance to. “No Capea” and “Pary,” two of the band’s most recent songs, were standouts that played like zapateados, boot-stomping rhythms that had the arena on its feet.

The guys took swigs of tequila and frequently joked with each other onstage, even as they kept the energy up through “911,” “Ay Mama” and “Bebe Dame.” During band intros, they played snippets of songs by classic acts Pesado, Intocable and Grupo Limite.

“Mariacheño” singer Christian Nodal was a surprise guest late in the set. But the real treat for local fans was La Mafia, the first Tejano act to tour Mexico and Latin America on a stadium-level scale starting in the late 1980s. Singer Oscar De La Rosa took a solo turn on the ballad “Me Estoy Enamorando” and was joined by Solis for “Un Millón de Rosas.”

La Mafia has never received enough credit for revolutionizing Tejano music and paving the way for today’s regional hits, so it was nice to see Frontera give the Houston band its flowers — or rosas.