It was five in the afternoon in Chicago when NewJeans took to the stage at Lollapalooza on August 3. The schedule, announced back in May, showed the group had a 45-minute time slot to perform. Including the recent release of Get Up, it seemed clear how the group would be using that time: a full look at the portfolio they’d built up over the previous year. But the thing we couldn’t see coming? Everything else. Their performance proved that the “most-talked-about” K-pop band lives up to all the hype (NME).

Lollapalooza was NewJeans’ first time performing a whole string of songs together, other than at their fan meeting event. At a massive festival like Lollapalooza, there were no guarantees that the condition of the venue, size and makeup of the audience, or the overall atmosphere of the concert would necessarily be in their favor. But what we saw at Lollapalooza that day was the girl band that filled up the biggest main stage of the festival, vibing with tens of thousands of people in the audience with their natural pop star vibes. This group did not even exist only a year ago. Six months later, they were already on the Billboard Hot 100. And six more months after that, Get Up, their second EP, was number one on the Billboard 200 and they were performing on the main stage of a revered music festival.

Where things get really interesting is how Get Up went to number one on Billboard 200 during the week of August 5. The EP was released on July 21, so figures for its first week continued through to the 27th. Here’s what normally happens next: The following Sunday (in this case, July 29), Billboard announces the 200’s top 10. Then, on Tuesday (here, August 1), they publish the full list to their website. There were predictions all throughout its first week that Get Up had a strong chance of making it to number one. But as the weekend approached, the Barbie soundtrack was picking up steam. Get Up and the Barbie movie were both released on July 21, and Barbie had a phenomenal opening weekend at the box office—the 20th-highest in history, in fact. By the following Sunday, it laid claim to the 12th highest-grossing first week of all time. Songs from the star-studded OST became streaming darlings in parallel with the movie’s popularity. According to Spotify’s US figures for the week running from July 21 through 27, “Barbie World” (Nicki Minaj, Ice Spice, Aqua) shot up from number five to number one, “What Was I Made For?” (Billie Eilish) from 18 to three and “Dance the Night” (Dua Lipa) from 14 to seven. As the weekend approached, analysts couldn’t come to any firm conclusions about whether Barbie or Get Up would come out on top.

And then, Sunday came around. Billboard tweeted that the release of the top 10 would be delayed due to a “processing issue,” which happens sometimes when the race is neck and neck. Finally, after three days of waiting, the official chart went up on Wednesday. As expected, the competition was fierce. In the end, Get Up sold 126,500 copies, while Barbie’s soundtrack moved 126,000—a mere 500-unit difference. More specifically, 101,500 of Get Up’s units were from album sales and streaming made up the remaining 24,500. By contrast, Barbie sold 53,000 albums; 70,000 of its units came from streaming.

Take note of the streaming figures here. Typically speaking, the more tracks an album has, the better it does on the streaming charts. That’s because the total stream count is obtained by summing up all the streams of each track on the album.With just six tracks, Get Up sat at a clear disadvantage; the album was streamed 34.39 million times over the course of the week, giving each track an average of 5.73 million. That’s even more impressive depending on how you perceive the tracks “New Jeans” and “Get Up.” (For reference, the Barbie OST was streamed 93.81 million times; across 19 tracks, that’s an average of 4.94 million per song.) Figures like those seen for Get Up are only possible when every track, not just the singles, are streamed together, unless one of the tracks is a contender for the Hot 100. And the numbers reflect this: The Hot 100 chart for the week of August 5 had “Super Shy” at number 48, “ETA” at 81 and “Cool With You” at 93—and that’s almost on streams alone.

If you take out the 24,500 units that came from streaming, Get Up never would have made it to number two—or even number three. Morgan Wallen’s album One Thing at a Time reached number three on the back of 103,000 units. Most K-pop albums that hit number one on the Billboard 200 do so thanks to physical sales, so even without streaming, they still reach the top. In addition to the over 100,000 physical copies that NewJeans sold, they also proved themselves through the same kind of unimaginable streaming performance that the Barbie OST saw, all within the span of a year. And they’ve clearly broken into the US market. It’s no wonder the group’s turning heads. The lyrics to “New Jeans,” the opening track off Get Up, read just like an autobiography of the past year: “All eyes on us NewJeans / So fresh, so clean.”