Harry Styles duets with Shania Twain at Coachella

Singer Harry Styles started off his headlining set at Coachella with a simple greeting - 'Good evening. My name is Harry'.

"It's big in here, innit?" Styles cracked, before explaining how things were gonna go.

"For the next 80-or-something minutes, our job is to entertain you. I promise you we'll do our absolute very best. You also have one job - that is to have much fun as you possibly can. I want you to be whoever it is you always wanted to be in this field tonight," reports 'Variety'.

For Styles, that meant a regression of sorts - to his younger, pre-One Direction days when he would sing Shania Twain songs in the car.

"This lady taught me to sing," said Styles of Twain.

"She also told me that men are trash."

Said Twain: "I'm a bit starstruck, what can I say? No, really, I'm a fan of you, of course. I realise that when I was writing this song, you were just a little kid. It's kind of a dream and very surreal to be sitting here right now to sing this song with you. I think I'm just in love and this song is all about love. So let's just sing about love."