Harry Styles covers Ariana Grande's 'Just a Little Bit of Your Heart' live in San Francisco
Erica Love / YouTube

U.K. singer-songwriter Harry Styles kicked off his world tour on Sept. 19 in San Francisco. In the setlist, he included a cover of Ariana Grande fan favorite "Just a Little Bit of Your Heart."

To help move copies of his debut self-titled album, Styles announced a fall world tour earlier this year that sold out in a matter of seconds. The first date happened last night in San Francisco where Harry performed a bunch of his new songs alongside covers of Fleetwood Mac and his very own band, One Direction. Surprisingly, he also sang "Just a Little Bit of Your Heart" for the first time ever. He wrote the beautiful ballad that Grande recorded for her 2014 album My Everything.

In front of a mic stand draped with a rainbow flag, Styles launched into a rock-influenced version of "Just a Little Bit of Your Heart." While Grande's take was breathtaking, Harry's live version of the song was edgier and heavier but still just as chill-inducing. "Just a little bit of your heart is all I want," he sang in a soaring performance. After years of wondering how Styles must've sounded writing "Heart," fans were finally treated to an incredible live version of it straight from Harry himself.

Styles' self-titled album topped the Billboard 200 chart back in May. His world tour continues in the U.S. through next month.