R3HAB & Korolova Say ‘Hi Hello’ After Viral MainStage Premiere

After lighting up the Tomorrowland MainStage this summer, R3HAB and Korolova release “Hi Hello”. The track pairs a sweet, innocent-sounding female vocal with a hard-hitting synth-driven drop, and fans have been waiting for it for months.

“Working with R3HAB on this track was all about bringing our combined energy to the dancefloor. Premiering it together at Tomorrowland this year was a real highlight, and I’ve been playing it all summer. It’s one of those tracks that gets an immediate reaction from the crowd, and I can’t wait to finally share it with everyone.” – Korolova

‘Hi Hello’ had already been tested in DJ sets for a few months, but its defining moment came on The Holy Grounds of Tomorrowland in Boom, Belgium. During his MainStage B2B with Afrojack at Tomorrowland 2026, R3HAB brought out Korolova to play the track together for the first time. Footage of the moment went viral on 1001Tracklists and other channels, building anticipation long before release. “Hi Hello” opens with a delicate vocal that draws listeners in. Then the mood shifts as a powerful synth-driven buildup takes over, leading into a drop made for the biggest stages.

“Hi Hello” brings their two worlds together, matching R3HAB’s festival firepower with Korolova’s melodic touch.