Coldplay have revealed they tried to write their new album under hypnosis at their producer's suggestion.
The band said a hypnotherapist was brought in to see how it would affect results as they recorded latest album Mylo Xyloto, released this week.
Producer Brian Eno – formerly with a member of Roxy Music – is known for his wacky methods to get the best out of bands.
"We're not afraid to try different things. Brian Eno brought a friend in and the four of us were playing music under hypnosis," said Bass player Guy Berryman.
"It didn't really come to anything. You try 10 ideas and only one works.
"But nothing is too stupid for us."
Brian, who has been behind albums such as U2's Achtung Baby, is known for his "oblique strategies".
He spoke as the band launched their fifth studio album in Madrid ahead of a major show at the city's Plaza De Toros De Las Ventas.
Meanwhile, frontman Chris Martin ruled out the band members appearing on ITV1's The X Factor as guests or mentors, but he said they were all fans of the show.
Coldplay kicked off their European tour with a show broadcast around the world from Madrid's premier bull ring.
Photographer and film-maker Anton Corbijn directed the show, which was broadcast live on YouTube.