ROCK star Chris Martin insisted he was never going to allow his wife Gwyneth Paltrow to sing with his band Coldplay.

“She is a great singer and a wonderful woman, but she is not going to play with us,” he said at a press conference before the band kicked off their European tour in Madrid.

He also insisted he would never appear on the UK hit show the X-Factor.

“We can’t go on there,” he said. “We do things differently, even though we love watching it. We’re far too old.”

The band performed to thousands of fans in Madrid’s bullring, while millions more streamed the concert live on YouTube.

“We looked for some of the most beautiful buildings we could find and this is what we came up with, in one of the most beautiful cities in the world,” Martin said.

The group – promoting their new album Mylo Xyloto – chose film-maker Anton Corbijn to direct the gig, which included a stunning light show.

The band mixed classics including Yellow, Politik and The Scientist, with tracks from their new record including Paradise.

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