In a night of big moments, Afrojack helped deliver one of the very biggest when he brought out French titan David Guetta and one of history’s all-time singers, Sia, to perform their 2011 classic “Titanium” during the first night (March 28) of Ultra Music Festival 2025.

The pair walked onto the festival’s mainstage hand-in-hand, a seeming necessity given that Sia’s signature black and blonde wig was covering her eyes. “I f—ing love you brother, thanks so much for everything,” Afrojack said to Guetta, adding, “and of course, ladies and gentlemen she’s here for the first time in Ultra history,” while introducing Sia. Then the opening chords of the song came on, drawing a roar of cheers from the crowd.

Wearing a voluminous pink taffeta dress and a pink bow to match, Sia then launched into the song, with the crowd screaming along to every word and Guetta and Afrojack hugging behind the decks. Watch footage from the performance below.

Extraordinarily, this appearance was the first time Guetta and Sia have ever appeared together to perform the song live since its 2011 release. A classic of the EDM era, “Titanium” spent 33 weeks on the Billboard Hot 100 chart in 2011 and 2012, peaking at No. 7 on the chart. Coming from Guetta’s 2011 album Nothing But the Beat, “Titanium” was — aptly for Friday’s performance — produced by Guetta, Afrojack and Dutch artist Giorgio Tuinfort.

The song was the first of many collaborations Sia and Guetta have done together over the years, with the pair also performing their latest song together, “Beautiful People,” last night during the festival.

This year marks the 25th anniversary of Ultra Music Festival Miami, which continues Saturday (March 29) with performances by a Hardwell, deadmau5 b2b Pendulum, Carl Cox, Massano and Christ Avantgarde, Skirllex (who’ll perform at the festival for the first time in a decade) and many others.