Paul McCartney has gushed about the opportunity to work alongside Kanye West, calling himself "lucky" and "flattered" to have had the chance.

"I'm lucky that someone like Kanye would go, 'Yes I would like to work with Paul McCartney, "I was quite flattered.

I thought, 'Why does he want to work with me?' It was a few months later when I was starting to think, 'should I ring him and ask him did anything come of the stuff we did?'

But then I thought 'I can't do that — that's too soppy!' I'll just leave it and try and act cool."

The duo collaborated on new music for West's forthcoming album, with tracks "All Day," "Only One" and "FourFiveSeconds" already released.