5H's Ally Brooke Lives Her Dream in Performance with Opera Tenor Placido Domingo: Watch

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Ally Brooke arrives at the Entertainment Weekly celebration honoring nominees for The Screen Actors Guild Awards at the Chateau Marmont on Jan. 28, 2017 in Los Angeles.

The ladies of Fifth Harmony never cease to amaze. Like an Avengers-style squad made up of members with vastly different super powers, each time they step out on their own the core four do the unexpected. Case in point: on Wednesday night (Jan . 24) Ally Brooke took the stage in her home town of San Antonio to join famed opera tenor Placido Domingo's sold-out show at the Lila Cockrell Theater as part of the city's Tricentennial celebration.

Backed by a 64-person concert orchestra, the dynamic duo performed the beloved Consuelo Velazquez classic "Besame Mucho," with Brooke -- dressed in a flowing white ball gown -- easily holding her own alongside the legendary 77 year-old opera icon as they took turns singing the song's swaying Spanish-language lyrics about wanting an abundance of kisses.

According to MySanAntonio, Brooke also took a solo turn on a cover Selena's "No Me Queda Mas." Before the show, Brooke was just a little excited about the gig.

It's just one of the things Brooke has to be pumped up about this week, as she's also prepping for Friday's (Jan. 26) release of her debut solo single, "Perfect," a collabo with German DJ Topic.