Kanye West will appear on a remix of Katy Perry's new single 'E.T.', it's been announced.

The rapper has recorded two verses for the track, which will be the lead single from a re-packaged version of Perry's recent album 'Teenage Dream'.

The song, which is already circulating online, marks the first time that the pair have worked together.

Meanwhile, Perry is set to embark on her California Dreams tour in support of the album in the coming month. The Jaunt includes two trips to the UK - one in the spring and another in the autumn.

(by Jason Gregory)