P!nk has admitted that she initially struggled to convince fun. singer Nate Ruess to duet with her.

The two vocal talents appeared on the No.1 hit track 'Just Give Me A Reason', which featured on P!nk's 2012 album 'The Truth About Love'.

However, the US star told Billboard that Ruess was unsure about teaming up with a pop songstress at first, revealing:

"Nate wasn't sure that he wanted to be on a collaboration with a popstar. Their label is an independent label, they weren't sure. And I just kept telling them - well, I kind of tricked him into doing it, because we wrote the first verse the first day and basically the chorus, and then I went home and I was looking over the lyrics and thinking about the song, and it was never supposed to be a collaboration. We were just collaborating as writing partners. But I was like, 'This song is a conversation between lovers'. And he had to do it because he's my favourite voice right now, aside from probably Adele."

The flamboyant star continued: "I went back in and wrote the second verse and I sort of pitched the song. And he was like, 'Yeah, I don't know how my band's going to feel about it'. And I was like, 'Yeah, I get it. I wouldn't want to be on a song with a popstar either. But you can't deny that it's a conversation - you just put the vocals down as the scratch vocal and I'll get Gotye to sing it'. And I knew that was a huge dig. And [so] he sang it and I knew, no matter what he said, no one was going to sing it better. It just took many, many months of convincing."