"This isn't only about me, this is something we've created together," Loreen told the crowd below.
"I think it's a winning song, even if I hadn't won."
Just three days after winning the Eurovision Song Contest in Baku, Azerbaijan, Loreen took to the stage again, this time on top of Hötorgshallen in central Stockholm.
Jade, a seven-year-old Loreen fan, could hardly contain her excitement about the live show, having crafted a sign congratulating Loreen on her victory.
“She is the best singer in the world; I'm really excited about seeing her performing live,” she told The Local.
Thousands of fans gathered on the square below to see the 28-year-old singer who not only won over the music world with her incredible voice, but also with her mystical performance and unique Qi-Gong inspired dance style.
After the Royal Swedish Army band played their tribute version of the hit song, which is currently sitting atop the iTunes-charts in 14 countries, Loreen sang "Euphoria" twice for the adoring crowd.
The show began with a classical arrangement of the dance track, followed by a few words from Loreen to her supporters, and ended with the same version she sang on Saturday night.
Just after her performance, Loreen had to rush to the Arlanda Airport to catch a flight to London, according to the Expressen newspaper.
Waiting for Loreen in the UK was a BBC morning show, followed by a trip to France for more promotions. Loreen will be back in Stockholm by Friday, wrote the paper.
While Stockholmers embraced the performance with open arms, it remains undecided whether the Eurovision Song Contest in May 2013 will be hosted in Stockholm as it was in 2000, or whether Gothenburg or Malmö will snag the event.