On Saturday, Oct. 10, a mixture of teen girls, middle-aged men and women and a spattering of young adults crowded into the Marquis Theater to see Mikky Ekko. However, many members of the audience were there just to see the opener, electro-pop darlings Transviolet.

Transviolet, hailing from Los Angeles, took the stage with a seasoned sense of poise that only comes with experience, despite this being the group’s first tour (and first time in Denver). The band, comprised of lead singer Sarah McTaggart, guitarist and vocalist Judah McCarthy, bass and key player Mike Panek and drummer Jon Garcia, just released their first song, “Girls Your Age,” in July, but after the performance, it was clear each member knew what they were doing.

Dressed in all black, the band strutted on stage, confident and radiant. The lead singer, Sarah McTaggart was sultry and enigmatic; she took the energy from the crowd and turned it into a powerful performance, jam-packed with passionate vocals and sensual dancing. The stage had a key visual aspect as well—muted lights in shades of blue, purple and pink worked as a dreamy backdrop, causing the lead singer to look even more ethereal. Transviolet’s set, composed of dance-inducing pop with woven-in synths, included hits from the group such as “Bloodstream” and the popular “Girls Your Age.”

The most refreshing part of Transviolet’s performance was the band’s interactions with the young crowd up front. While some artists get annoyed by adoring fans, Transviolet took extra care of them, winking and holding hands, even letting a few girls sing into the mic. Transviolet was not simply a band on stage—it was more like they were the audience’s good friends who jumped up to play a set. The group so obviously cares about its listeners that it’s hard to not find Transviolet at least a little bit endearing.

Overall, Transviolet’s performance was charismatic, energetic and very, very fun—this band is going to get absolutely huge (both Katy Perry and Harry Styles have already tweeted about them). After rising out of nowhere, Transviolet’s first single “Girls Your Age” already has over one million listens on Spotify, and the band has been raved about again and again by smaller music outlets. The consensus is this—Transviolet may have come out of the blue, but the band is here to stay.