BBC Radio 1 - Greg James, Sia talks to Greg - Farts and egomania; Greg James talks to Sia 

"I just farted it out" - Greg James talks to Sia about her return to pop

Sia and Greg had a chat about publishing, songwriting and who she\'d text

Greg asked how Sia\'s plans were for festivals in the UK and US-

“I’m doing Coachella this weekend and I’m so, like I’m crapping my pants. I can’t hit the high notes! I only sang those high notes once and they just copied them over in ProTools. And now I’ve gotta sing them like five times in a row and then not only is it one song I’ve gotta do eleven songs."

And also I did a stupid and wrote them all so high and they’re so hard to sing. I’ve never sung such hard songs before – I used to be, like, indie, soft whispery girl. So I’m just hoping I can hit the high notes.”

“Oh yeah that was fun someone was suggested ‘we should get a rapper on this song’ and I was like ‘can we get that guy who’s fun? Who’s bouncy?’ and they were like ‘Pitbull?’ and I was like ‘No, the other one!’”

Not that she\'s met him! Or, apparently, \'anybody\' - apart from her homegirls-

“The only person I think I’m good friends with is Katy Perry. And P!nk! Those are like my real, homegirly, people I could text pictures of, I don’t know, my face doing weird stuff.”

Things get slightly weirder in the second half, where Greg’s burgeoning attempts at actually becoming Sia notch up a level

Sia and Greg James personalise Cheap Thrills for Clara Amfo

Imitation is the sincerest form of flattery, eh? Greg really does love Sia...