PET SHOP BOYS have said that music created through The X Factor is "ultimately turgid".
The duo said the calibre of music is not up to scratch and real pop songs would stand the test of time.
Singer Neil Tennant said: "Good pop music doesn't really date. Look at Abba. Unfortunately they've become a kind of a cliché because of Mamma Mia! but 'Knowing Me, Knowing You' is an amazing record.
"The backing vocals are outstanding and the video is harrowing because their marriages are breaking up."
He went on to describe their recent experience of working with production house Xenomania as "very interesting".
Tennant added: "They write a series of choruses, different bits of the same piece of music and then move on to the next piece. Then they sing them all and choose the best bits.
"There's a lot of enjoyment, a lot of love going into their music - it's not formulaic or fake. They reinvent their sound and are always bringing in different elements and instruments.
"It was a very interesting experience because we had to leave our egos at the door - but we were happy to do that."
Pet Shop Boys release new album Yes on March 2